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Latin phonology is the system of sounds used in various kinds of Latin. This article largely deals with what features can be deduced for Classical Latin as it was spoken by the educated from the late Roman Republic to the early Empire. Evidence comes in the form of comments from Roman grammarians, common spelling mistakes, transcriptions into other languages, and the outcomes of various sounds in the Romance languages.

Latin orthography refers to the writing system used to spell Latin from its archaic stages down to the present. Latin was nearly always spelt in the Latin alphabet, but further details varied from period to period. The alphabet developed from Old Italic script, which had developed from a variant of the Greek alphabet, which had developed from a variant of the Phoenician alphabet. The Latin alphabet most resembles the Greek alphabet that can be seen on black-figure pottery dating to c. 540 BC.

As the language continued to be used as a classical language, lingua franca and liturgical language long after it ceased being a native language, pronunciation and – to a lesser extent – spelling diverged significantly from the classical standard with Latin words being pronounced differently by native speakers of different languages. While nowadays a reconstructed classical pronunciation aimed to be that of the 1st century AD is usually employed in the teaching of Latin, the Italian-influenced ecclesiastical pronunciation as used by the Catholic church is still in common use. The Traditional English pronunciation of Latin has all but disappeared from classics education but continues to be used for Latin-based loanwords and use of Latin e.g. for binominal names in taxonomy.

During most of the time written Latin was in widespread use, authors variously complained about language change or attempted to "restore" an earlier standard. Such sources are of great value in reconstructing various stages of the spoken language (the Appendix Probi is an important source for the spoken variety in the 4th century CE, for example) and have in some cases indeed influenced the development of the language. The efforts of Renaissance Latin authors were to a large extent successful in removing innovations in grammar, spelling and vocabulary present in Medieval Latin but absent in both classical and contemporary Latin.

Letterforms

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In Classical times there was no modern-like distinction between upper case and lower case. Inscriptions typically use square capitals, in letterforms largely corresponding to modern upper-case, and handwritten text was generally in the form of cursive, which includes letterforms corresponding to modern lowercase.

Letters and phonemes

In Classical spelling, individual letters mainly corresponded to individual phonemes (alphabetic principle). Exceptions include:

1. The letters ⟨a e i o u y⟩, each of which could represent either a short vowel or a long one. The long vowels were sometimes marked with apices, as in ⟨á é ó ú ý⟩, while long /iː/ could be marked with the special character ⟨ꟾ⟩. Since the 19th century, long vowels have been marked with macrons, as in ⟨ā ē ī ō ū ȳ⟩; sometimes breves may also be used to indicate short vowels, as in ⟨ă ĕ ŏ ŭ y̆⟩.
2. The letters ⟨i u⟩, which could either indicate vowels (as mentioned) or the consonants /j w/ respectively. In modern times the letters ⟨j v⟩ began to be used as distinct spellings for these consonants (now often pronounced very differently).
3. Digraphs such as ⟨ae au oe⟩, which represented the diphthongs /ae̯ au̯ oe̯/. In a few words ⟨ae oe⟩ also stood for sequences of two adjacent vowels.
4. Digraphs such as ⟨ph th ch⟩, standing for the aspirated consonants /pʰ tʰ kʰ/.

Consonants

Below are the distinctive (i.e. phonemic) consonants that are assumed for Classical Latin. Those placed in brackets have a debated phonemic status, and those preceded by a dagger are found mainly or only in Greek loanwords.

Phonetics

• Latin may have had the labialized velar stops /kʷ ɡʷ/ as opposed to the stop + semivowel sequences /kw ɡw/ (as in the English quick or penguin). The argument for /kʷ/ is stronger than that for /ɡʷ/.
• The former could occur between vowels, where it always counted as a single consonant in Classical poetry, whereas the latter only occurred after /n/, where it is impossible to tell whether it counted as one consonant or two. The labial element, whether or , appears to have been palatalised before a front vowel, resulting in / (for instance quī would have sounded something like listen). This palatalisation did not affect the independent consonant /w/ before front vowels.
• /kʷ ɡʷ/ before /u/ were not distinct from /k ɡ/, which were allophonically labialized to by a following /u/ such that writing a double uu was unnecessary. This is suggested by the fact that equus and unguunt (from Old Latin equos and unguont) are also found spelt as ecus and ungunt.
• /p t k/ were less aspirated than the corresponding English consonants, as implied by their usually being transliterated into Ancient Greek as ⟨π τ κ⟩ and their pronunciation in most Romance languages. In many cases however it was not the Latin /p k/ but rather /b ɡ/ that were used to render Greek word-initial /p k/ in borrowings (as in πύξος, κυβερνῶ > buxus, guberno), especially borrowings of a non-learned character. This might suggest that the Latin /p k/ had some degree of aspiration, making /b ɡ/ more suitable to approximate the Greek sounds.
• /pʰ tʰ kʰ/ were pronounced with notable aspiration, like the initial consonants of the English pot, top, and cot respectively. They are attested beginning c. 150 BC, in the spellings ⟨ph th ch⟩, at first only used to render the Greek ⟨φ θ χ⟩ in loanwords. (Previously these had been rendered in Latin as ⟨p t c⟩.) From c. 100 BC onward ⟨ph th ch⟩ spread to a number of native Latin words as well, such as pulcher and lachrima. When this occurred it was nearly always in the vicinity of the consonant /r/ or /l/, and the implication is that Latin /p t k/ had become aspirated in that context.
• /z/ was found as a rendering of the Greek ⟨ζ⟩ in borrowings starting around the first century BC. (In earlier borrowings, the Greek sound had been rendered in Latin as /ss/.) In initial position this appears to have been pronounced , and between vowels it appears to have been doubled to (counted as two consonants in poetry).
• /s/ was unvoiced in all positions in Classical Latin. Previously however Old Latin /s/ appears to have voiced to between vowels, ultimately turning to /r/. Cicero reports the family-name Papisius being changed to Papirius in the fourth century BC, which may give some idea of the chronology. Afterward new instances of /s/ developed between vowels from sound-changes like the degemination of /ss/ after long vowels and diphthongs (as in caussa > causa), which Quintilian reports to have happened a little after the time of Cicero and Virgil.
• In Old Latin, final /s/ after a short vowel was often lost, probably after first debuccalizing to , as in the inscriptional form Cornelio for Cornelios (Classical Cornelius). Often in the poetry of Plautus, Ennius, and Lucretius, final /s/ did not count as a consonant when followed by a word beginning with a consonant. By the Classical period this practice was described as characteristic of non-urban speech by Cicero.
• /f/ was labiodental in Classical Latin but may have been a bilabial /ɸ/ in Old Latin, or perhaps in free variation with . Lloyd, Sturtevant, and Kent make this argument based on misspellings in early inscriptions, the fact that many instances of Latin /f/ descend from Proto-Indo-European */bʰ/, and the outcomes of the sound in Romance (particularly in Spain).
• In most cases /m/ was pronounced as a bilabial nasal. At the end of a word, however, it was generally lost beginning in Old Latin (except when another nasal or a plosive followed it), leaving compensatory lengthening and nasalization on the preceding vowel (such that decem may have sounded something like listen). In Old Latin inscriptions, final ⟨m⟩ is often omitted, as in ⟨viro⟩ for virom (Classical virum). It was frequently elided before a following vowel in poetry and lost without a trace (apart from perhaps lengthening) in the Romance languages, except in a number of monosyllabic words, where it often survives as /n/ or a further development thereof.
• /n/ and /m/ merged via assimilation before a following consonant, with the following consonant determining the resulting pronunciation: bilabial before a bilabial consonant (/p b/), coronal before a coronal consonant (/t d/) and velar before a velar consonant (/k kʷ ɡ/). This occurred both within words (e.g. quīnque may have sounded something like listen) and across word-boundaries (for instance in causā with , or im pace).
• /ɡ/ assimilated to a velar nasal before /n/. Allen and Greenough say that a vowel before is always long, but W. Sidney Allen says that is based on an interpolation in Priscian, and the vowel was actually long or short depending on the root, as for example rēgnum from the root of rēx but magnus from the root of magis. /ɡ/ probably did not assimilate to before /m/. The cluster /ɡm/ arose by syncope, as for example tegmen from tegimen. Original /ɡm/ developed into /mm/ in flamma, from the root of flagrō. At the start of a word, original /ɡn/ was reduced to , and this change was reflected in the orthography of later texts, as in gnātus, gnōscō > nātus, nōscō.
• In Classical Latin, the rhotic /r/ was most likely an alveolar trill in some positions and when doubled. Gaius Lucilius likened it to the sound of a dog, and later writers described it as being produced by vibration. /d/ was sometimes written as ⟨r⟩, possibly suggesting a tap [ɾ] (like the single /ɾ/ in Spanish).
• /l/ was strongly velarized in syllable coda and probably somewhat palatalized when geminated or followed by /i(ː)/. In intervocalic position, it appears to have been velarized before all vowels except /i(ː)/.
• /j/ generally appeared only at the beginning of words, before a vowel, as in iaceō, except in compound words such as adiaceō (pronounced something like listen). Between vowels, it was generally as a geminate /jj/, as in cuius (pronounced something like listen) except in compound words such as trāiectus. This /jj/ is sometimes marked in modern editions by a circumflex on the preceding vowel, e.g. cûius, êius, mâior, etc. /j/ could also have varied with /i/ in the same morpheme, as in iam /jam/ and etiam /ˈe.ti.am/, and in poetry one could be replaced with the other for metrical purpose.
• /w/ was pronounced as an approximant until the first century AD, when /w/ and intervocalic /b/ began to develop into fricatives. In poetry, /w/ and /u/ could be replaced with each other, as in /ˈsilua/~/ˈsilwa/ or /ˈɡenua/~/ˈɡenwa/. Unlike /j/ it remained a single consonant in most words, e.g. in cavē, although it did represent a double /ww/ in borrowings from Greek such as the name Evander.
• /h/ was generally still pronounced in Classical Latin, at least by educated speakers, but in many cases it appears to have been lost early on between vowels, and sometimes in other contexts as well (diribeō < *dis-habeō being a particularly early example). Where intervocalic /h/ survived, it was likely voiced (that is, ).

Notes on spelling

• Doubled consonant letters represented genuinely doubled consonants, as in ⟨cc⟩ for /kk/. In Old Latin, geminate consonants were written as if they were single until the middle of the second century BC, when orthographic doubling began to appear. Grammarians mention the marking of double consonants with the sicilicus, a diacritic in the shape of a sickle. It appears in a few inscriptions of the Augustan era.
• ⟨c⟩ and ⟨k⟩ both represented /k/, whereas ⟨qu⟩ represented /kʷ/. ⟨c⟩ and ⟨q⟩ distinguish minimal pairs such as cui /kui̯/ and quī /kʷiː/. In Classical Latin ⟨k⟩ appeared in only a few words like kalendae, Karthagō - which could also be spelt calendae, Carthagō.
• ⟨x⟩ represented /ks/. In Old Latin, /ks/ was also spelled in other ways like ⟨ks cs xs⟩. The letter ⟨x⟩ was borrowed from the Western Greek alphabet, where chi ⟨χ⟩ stood for /ks/ as well. This was unlike the usage of chi in the Ionic alphabet, where it stood for /kʰ/, with /ks/ instead represented by the letter xi ⟨ξ⟩.
• In Old Latin inscriptions, /k/ and /ɡ/ were not distinguished. They were both represented by ⟨c⟩ before ⟨e i⟩, by ⟨q⟩ before ⟨o u⟩, and by ⟨k⟩ before consonants or ⟨a⟩. The letterform ⟨c⟩ derives from the Greek gamma ⟨Γ⟩, which represented /ɡ/. Its use for /k/ may come from Etruscan, which did not distinguish voiced plosives from voiceless ones. In Classical Latin, ⟨c⟩ represented /ɡ/ only in the abbreviations c and cn, for Gaius and Gnaeus respectively.
• ⟨g⟩ was created in the third century BC to distinguish /ɡ/ from /k/. Its letterform derived from ⟨c⟩ with the addition of a diacritic or stroke. Plutarch attributes this innovation to Spurius Carvilius Ruga around 230 BC, but it may have originated with Appius Claudius Caecus in the fourth century BC.
• The combination gn probably represented the consonant cluster , at least between vowels, as in agnus listen. Vowels before this cluster were sometimes long and sometimes short.
• The digraphs ph, th, and ch represented the aspirated plosives /pʰ/, /tʰ/ and /kʰ/. They began to be used in writing around 150 BC, primarily as a transcription of Greek phi Φ, theta Θ, and chi Χ, as in Philippus, cithara, and achāia. Some native words were later also written with these digraphs, such as pulcher, lachrima, gracchus, triumphus, probably representing aspirated allophones of the voiceless plosives near /r/ and /l/. Aspirated plosives and the glottal fricative /h/ were also used hypercorrectively, an affectation satirized in Catullus 84.
• In Old Latin, Koine Greek initial /z/ and /zz/ between vowels were represented by s and ss, as in sona from ζώνη and massa from μᾶζα. Around the second and first centuries B.C., the Greek letter zeta Ζ was adopted to represent /z/ and /zz/. However, the Vulgar Latin spellings z or zi for earlier di and d before e, and the spellings di and dz for earlier z, suggest the pronunciation /dz/, as for example ziomedis for diomedis, and diaeta for zeta.
• In ancient times u and i represented the approximant consonants /w/ and /j/, as well as the close vowels /u(ː)/ and /i(ː)/.
• i representing the consonant /j/ was usually not doubled in writing, so a single i represented double /jː/ or /jj/ and the sequences /ji/ and /jːi/, as in cuius for *cuiius /ˈkuj.jus/, conicit for *coniicit /ˈkon.ji.kit/, and reicit for *reiiicit /ˈrej.ji.kit/. Both the consonantal and vocalic pronunciations of i could occur in some of the same environments: compare māius /ˈmaj.jus/ with Gāius /ˈɡaː.i.us/, and Iūlius /ˈjuː.li.us/ with Iūlus /iˈuː.lus/. The vowel before a doubled /jː/ is sometimes marked with a macron, as in cūius. It indicates not that the vowel is long but that the first syllable is heavy from the double consonant.
• v between vowels represented single /w/ in native Latin words but double /ww/ in Greek loanwords. Both the consonantal and vocalic pronunciations of v sometimes occurred in similar environments, as in genua and silva .

Vowels

Monophthongs

Classical Latin had ten native phonemic monophthongs, five short /i e a o u/ and five long /iː eː aː oː uː/. Some loanwords from Greek had ⟨y⟩, which would have been pronounced as /y(ː)/ by educated speakers but approximated with the native vowels /i(ː)/ or /u(ː)/ by the less-educated.

Long and short vowels

The short vowels /i e o u/ appear to have been pronounced with a relatively open quality, which may be approximated as [ɪ] [ɛ] [ɔ] [ʊ], and the corresponding long vowels with a relatively close quality, approximately [iː] [eː] [oː] [uː]. That the short /i u/ were, as this implies, similar in quality to the long /eː oː/ is suggested by attested misspellings such as:

• ⟨trebibos⟩ for tribibus
• ⟨minsis⟩ for mēnsis
• ⟨sob⟩ for sub
• ⟨punere⟩ for pōnere

/e/ most likely had a more open allophone before /r/.

/e/ and /i/ were probably pronounced closer when they occurred before another vowel, with e.g. mea written as ⟨mia⟩ in some inscriptions. Short /i/ before another vowel is often written with the so-called i longa, as in ⟨dꟾes⟩ for diēs, indicating that its quality was similar to that of long /iː/; it was almost never confused with e in this position.

Adoption of Greek upsilon

y was used in Greek loanwords with upsilon Υ. This letter represented the close front rounded vowel, both short and long: /y yː/. Latin did not have this sound as a native phoneme, and speakers tended to pronounce such loanwords with /u uː/ in Old Latin and /i iː/ in Classical and Late Latin if they were unable to produce /y yː/.

Sonus medius

An intermediate vowel sound (likely a close central vowel [ɨ] or possibly its rounded counterpart [ʉ]), called sonus medius, can be reconstructed for the classical period. Such a vowel is found in documentum, optimus, lacrima (also spelled docimentum, optumus, lacruma) and other words. It developed out of a historical short /u/, later fronted by vowel reduction. In the vicinity of labial consonants, this sound was not as fronted and may have retained some rounding, thus being more similar if not identical to the unreduced short /u/ [ʊ]. The Claudian letter Ⱶ ⱶ was possibly invented to represent this sound, but is never actually found used this way in the epigraphic record (it usually served as a replacement for the upsilon).

Vowel nasalization

Vowels followed by a nasal consonant were allophonically realised as long nasal vowels in two environments:

• Before word-final m:
  • monstrum /ˈmon.strum/ >
  • dentem /ˈden.tem/ >
• Before nasal consonants followed by a fricative:
  • censor /ˈken.sor/ > (in early inscriptions, often written as cesor)
  • consul /ˈkon.sul/ > (often written as cosol and abbreviated as cos)
  • inferōs /ˈin.fe.roːs/ > (written as iferos)

Those long nasal vowels had the same quality as ordinary long vowels. In Vulgar Latin, the vowels lost their nasalisation, and they merged with the long vowels (which were themselves shortened by that time). This is shown by many forms in the Romance languages, such as Spanish costar from Vulgar Latin cōstāre (originally constāre) and Italian mese from Vulgar Latin mēse (Classical Latin mensem). On the other hand, the short vowel and /n/ were restored, for example, in French enseigne and enfant from insignia and infantem (e is the normal development of Latin short i), likely by analogy with other forms beginning in the prefix in-.

When a final -m occurred before a plosive or nasal in the next word, however, it was pronounced as a nasal at the place of articulation of the following consonant. For instance, tan dūrum was written for tam dūrum in inscriptions, and cum nōbīs was a double entendre, presumably for cunnō bis .

Diphthongs

ae, oe, au, ei, eu could represent diphthongs: ae represented /ae̯/, oe represented /oe̯/, au represented /au̯/, ei represented /ei̯/, and eu represented /eu̯/. ui sometimes represented the diphthong /ui̯/, as in cui listen and huic. The diphthong ei mostly had changed to ī by the classical epoch; ei remained only in a few words such as the interjection hei.

If there is a tréma above the second vowel, both vowels are pronounced separately: aë , aü , eü and oë . However, disyllabic eu in morpheme borders is traditionally written without the tréma: meus 'my'.

In Old Latin, ae, oe were written as ai, oi and probably pronounced as , with a fully closed second element, similar to the final syllable in French travail. In the late Old Latin period, the last element of the diphthongs was lowered to , so that the diphthongs were pronounced and in Classical Latin. They were then monophthongized to and respectively, starting in rural areas at the end of the Republican period. The process, however, does not seem to have been completed before the 3rd century AD, and some scholars say that it may have been regular by the 5th century.

Vowel and consonant length

Vowel and consonant length were more significant and more clearly defined in Latin than in modern English. Length is the duration of time that a particular sound is held before proceeding to the next sound in a word. In the modern spelling of Latin, especially in dictionaries and academic work, macrons are frequently used to mark long vowels: ⟨ā ē ī ō ū ȳ⟩, while the breve is sometimes used to indicate that a vowel is short: ⟨ă ĕ ĭ ŏ ŭ y̆⟩.

Long consonants were usually indicated through doubling, but ancient Latin orthography did not distinguish between the vocalic and consonantal uses of i and v. Vowel length was indicated only intermittently in classical sources and even then through a variety of means. Later medieval and modern usage tended to omit vowel length altogether. A short-lived convention of spelling long vowels by doubling the vowel letter is associated with the poet Lucius Accius. Later spelling conventions marked long vowels with an apex (a diacritic similar to an acute accent) or, in the case of long i, by increasing the height of the letter (long i); in the second century AD, those were given apices as well. The Classical vowel length system faded in later Latin and ceased to be phonemic in Romance, having been replaced by contrasts in vowel quality. Consonant length, however, remains contrastive in much of Italo-Romance, cf. Italian nono "ninth" versus nonno "grandfather".

A minimal set showing both long and short vowels and long and short consonants is ānus /ˈaː.nus/ ('anus'), annus /ˈan.nus/ ('year'), anus /ˈa.nus/ ('old woman').

Table of orthography

The letters b, d, f, h, m, n are always pronounced as in English , , , , , respectively, and they do not usually cause any difficulties. The exceptions are mentioned below:

Syllables and stress

Nature of the accent

Although some French and Italian scholars believe that the classical Latin accent was purely a pitch accent, which had no effect on the placing of words in a line of poetry, the view of most scholars is that the accent was a stress accent. One argument for this is that unlike most languages with tonal accents, there are no minimal pairs like ancient Greek φῶς (falling accent) "light" vs. φώς (rising accent) "man" where a change of accent on the same syllable changes the meaning. Among other arguments are the loss of vowels before or after the accent in words such as discip(u)līna and sinist(e)ra; and the shortening of post or pre-accentual syllables in Plautus and Terence by brevis brevians, for example, scansions such as senex and voluptātem with the second syllable short.

Old Latin stress

In Old Latin, as in Proto-Italic, stress normally fell on the first syllable of a word. During this period, the word-initial stress triggered changes in the vowels of non-initial syllables, the effects of which are still visible in classical Latin. Compare for example:

• faciō 'I do/make', factus 'made'; pronounced /ˈfa.ki.oː/ and /ˈfak.tus/ in later Old Latin and Classical Latin.
• afficiō 'I affect', affectus 'affected'; pronounced /ˈaf.fi.ki.oː/ and /ˈaf.fek.tus/ in Old Latin following vowel reduction, /af.ˈfi.ki.oː/ and /af.ˈfek.tus/ in Classical Latin.

In the earliest Latin writings, the original unreduced vowels are still visible. Study of this vowel reduction, as well as syncopation (dropping of short unaccented syllables) in Greek loan words, indicates that the stress remained word-initial until around the time of Plautus, in the 3rd century BC. The placement of the stress then shifted to become the pattern found in classical Latin.

Classical Latin syllables and stress

In Classical Latin, stress changed. It moved from the first syllable to one of the last three syllables, called the antepenult, the penult, and the ultima (short for antepaenultima 'before almost last', paenultima 'almost last', and ultima syllaba 'last syllable'). Its position is determined by the syllable weight of the penult. If the penult is heavy, it is accented; if the penult is light and there are more than two syllables, the antepenult is accented. In a few words originally accented on the penult, accent is on the ultima because the two last syllables have been contracted, or the last syllable has been lost.

Syllable

To determine stress, syllable weight of the penult must be determined. To determine syllable weight, words must be broken up into syllables. In the following examples, syllable structure is represented using these symbols: C (a consonant), K (a stop), R (a liquid), and V (a short vowel), VV (a long vowel or diphthong).

Nucleus

Every short vowel, long vowel, or diphthong belongs to a single syllable. This vowel forms the syllable nucleus. Thus magistrārum has four syllables, one for every vowel (a i ā u: V V VV V), aereus has three (ae e u: VV V V), tuō has two (u ō: V VV), and cui has one (ui: VV).

Onset and coda

A consonant before a vowel or a consonant cluster at the beginning of a word is placed in the same syllable as the following vowel. This consonant or consonant cluster forms the syllable onset.

• fēminae /feː.mi.nae̯/ (CVV.CV.CVV)
• uidēre /wi.deː.re/ (CV.CVV.CV)
• puerō /pu.e.roː/ (CV.V.CVV)
• beātae /be.aː.tae̯/ (CV.VV.CVV)
• grauiter /ɡra.wi.ter/ (CCV.CV.CVC)
• strātum /straː.tum/ (CCCVV.CVC)

After this, if there is an additional consonant inside the word, it is placed at the end of the syllable. This consonant is the syllable coda. Thus if a consonant cluster of two consonants occurs between vowels, they are broken up between syllables: one goes with the syllable before, the other with the syllable after.

• puella /pu.el.la/ (CV.VC.CV)
• supersum /su.per.sum/ (CV.CVC.CVC)
• coāctus /ko.aːk.tus/ (CV.VVC.CVC)
• intellēxit /in.tel.leːk.sit/ (VC.CVC.CVVC.CVC)

There are two exceptions. A consonant cluster of a stop p t c b d g followed by a liquid l r between vowels usually goes to the syllable after it, although it is also sometimes broken up like other consonant clusters.

• volucris /wo.lu.kris/ or /wo.luk.ris/ (CV.CV.KRVC or CV.CVK.RVC)

Heavy and light syllables

As shown in the examples above, Latin syllables have a variety of possible structures. Here are some of them. The first four examples are light syllables, and the last six are heavy. All syllables have at least one V (vowel). A syllable is heavy if it has another V or C (or both) after the first V. In the table below, the extra V or VC is bolded, indicating that it makes the syllable heavy.

Thus, a syllable is heavy if it ends in a long vowel or diphthong, a short vowel and a consonant, a long vowel and a consonant, or a diphthong and a consonant. Syllables ending in a diphthong and consonant are rare in Classical Latin.

The syllable onset has no relationship to syllable weight; both heavy and light syllables can have no onset or an onset of one, two, or three consonants.

In Latin a syllable that is heavy because it ends in a long vowel or diphthong is traditionally called syllaba nātūrā longa ('syllable long by nature'), and a syllable that is heavy because it ends in a consonant is called positiōne longa ('long by position'). These terms are translations of Greek συλλαβὴ μακρά φύσει (syllabḕ makrá phýsei = 'syllable long by nature') and μακρὰ θέσει (makrà thései = 'long by proposition'), respectively; therefore positiōne should not be mistaken for implying a syllable "is long because of its position/place in a word" but rather "is treated as 'long' by convention". This article uses the words heavy and light for syllables, and long and short for vowels since the two are not the same.

Stress rule

In a word of three or more syllables, the weight of the penult determines where the accent is placed. If the penult is light, accent is placed on the antepenult; if it is heavy, accent is placed on the penult. Below, stress is marked by placing the stress mark ⟨ˈ⟩ before the stressed syllable.

Iambic shortening

Iambic shortening or brevis brevians is vowel shortening that occurs in words of the type light–heavy, where the light syllable is stressed. By this sound change, words like egō, modō, benē, amā with long final vowel change to ego, modo, bene, ama with short final vowel.

The term also refers to shortening of closed syllables following a short syllable, for example quid ĕst, volŭptātem, apŭd iudicem and so on. This type of shortening is found in early Latin, for example in the comedies of Plautus and Terence, but not in poetry of the classical period.

Elision

Where one word ended with a vowel (including the nasalized vowels written am em im um~(om) and the diphthong ae) and the next word began with a vowel, the former vowel, at least in verse, was regularly elided; that is, it was omitted altogether, or possibly (in the case of /i/ and /u/) pronounced like the corresponding semivowel. When the second word was est or es, and possibly when the second word was et, a different form of elision sometimes occurred (prodelision): the vowel of the preceding word was retained, and the e was elided instead. Elision also occurred in Ancient Greek, but in that language, it is shown in writing by the vowel in question being replaced by an apostrophe, whereas in Latin elision is not indicated at all in the orthography, but can be deduced from the verse form. Only occasionally is it found in inscriptions, as in scriptust for scriptum est.

Modern conventions

Spelling

Letters

Modern usage, even for classical Latin texts, varies in respect of I and V. During the Renaissance, the printing convention was to use I (upper case) and i (lower case) for both vocalic /i/ and consonantal /j/, to use V in the upper case and in the lower case to use v at the start of words and u subsequently within the word regardless of whether /u/ and /w/ was represented.

Many publishers (such as Oxford University Press) have adopted the convention of using I (upper case) and i (lower case) for both /i/ and /j/, and V (upper case) and u (lower case) for both /u/ and /w/.

An alternative approach, less common today, is to use i and u only for the vowels and j and v for the approximants.

Most modern editions, however, adopt an intermediate position, distinguishing between u and v but not between i and j. Usually, the non-vocalic v after q or g is still printed as u rather than v, probably because in this position it did not change from /w/ to /v/ in post-classical times.

Diacritics

Textbooks and dictionaries usually indicate the length of vowels by putting a macron or horizontal bar above the long vowel, but it is not generally done in regular texts. Occasionally, mainly in early printed texts up to the 18th century, one may see a circumflex used to indicate a long vowel where this makes a difference to the sense, for instance, Româ /ˈroːmaː/ ('from Rome' ablative) compared to Roma /ˈroːma/ ('Rome' nominative).

Sometimes, for instance in Roman Catholic service books, an acute accent over a vowel is used to indicate the stressed syllable. It would be redundant for one who knew the classical rules of accentuation and made the correct distinction between long and short vowels, but most Latin speakers since the 3rd century have not made any distinction between long and short vowels, but they have kept the accents in the same places; thus, the use of accent marks allows speakers to read a word aloud correctly even if they have never heard it spoken aloud.

Pronunciation

Post-Medieval Latin

Since around the beginning of the Renaissance period onwards, with the language being used as an international language among intellectuals, pronunciation of Latin in Europe came to be dominated by the phonology of local languages, resulting in a variety of different pronunciation systems. See the article Latin regional pronunciation for more details on those (with the exception of the Italian one, which is described in the section on Ecclesiastical pronunciation below).

Loan words and formal study

When Latin words are used as loanwords in a modern language, there is ordinarily little or no attempt to pronounce them as the Romans did; in most cases, a pronunciation suiting the phonology of the receiving language is employed.

Latin words in common use in English are generally fully assimilated into the English sound system, with little to mark them as foreign, for example, cranium, saliva. Other words have a stronger Latin feel to them, usually because of spelling features such as the digraphs ae and oe (occasionally written as ligatures: æ and œ, respectively), which both denote /iː/ in English. The digraph ae or ligature æ in some words tend to be given an /aɪ/ pronunciation, for example, curriculum vitae.

However, using loanwords in the context of the language borrowing them is a markedly different situation from the study of Latin itself. In this classroom setting, instructors and students attempt to recreate at least some sense of the original pronunciation. What is taught to native anglophones is suggested by the sounds of today's Romance languages, the direct descendants of Latin. Instructors who take this approach rationalize that Romance vowels probably come closer to the original pronunciation than those of any other modern language (see also the section § Pronunciation shared by Vulgar Latin and Romance languages below).

However, other languages—including Romance family members—all have their own interpretations of the Latin phonological system, applied both to loan words and formal study of Latin. But English, Romance, or other teachers do not always point out that the particular accent their students learn is not actually the way ancient Romans spoke.

Ecclesiastical pronunciation

Since the late 19th and early 20th centuries, an Italianate pronunciation of Latin has grown to be accepted as a universal standard in the Catholic Church. Before then, the pronunciation of Latin in church was the same as the pronunciation of Latin in other fields and tended to reflect the sound values associated with the nationality and native language of the speaker. Other ecclesiastical pronunciations are still in use, especially outside the Catholic Church.

A guide to this Italianate pronunciation is provided below. Since the letters or letter-combinations b, d, f, m, n, ph, and v are pronounced as they are in English, they are not included in the table.

• Vowel length is not phonemic. As a result, the automatic stress accent of Classical Latin, which was dependent on vowel length, becomes a phonemic one in Ecclesiastical Latin. (Some Ecclesiastical texts mark the stress with an acute accent in words of three or more syllables.)
• Word-final m and n are pronounced fully, with no nasalization of the preceding vowel.

In his Vox Latina: A guide to the Pronunciation of Classical Latin, William Sidney Allen remarked that this pronunciation, used by the Catholic Church in Rome and elsewhere, and whose adoption Pope Pius X recommended in a 1912 letter to the Archbishop of Bourges, "is probably less far removed from classical Latin than any other 'national' pronunciation"; but, as can be seen from the table above, there are, nevertheless, very significant differences. The introduction to the Liber Usualis indicates that Ecclesiastical Latin pronunciation should be used at Church liturgies. The Pontifical Academy for Latin is the pontifical academy in the Vatican that is charged with the dissemination and education of Catholics in the Latin language.

Outside of Austria, Germany, Czechia and Slovakia, it is the most widely used standard in choral singing which, with a few exceptions like Stravinsky's Oedipus rex, is concerned with liturgical texts. Anglican choirs adopted it when classicists abandoned traditional English pronunciation after World War II. The rise of historically informed performance and the availability of guides such as Copeman's Singing in Latin has led to the recent revival of regional pronunciations.

Pronunciation shared by Vulgar Latin and Romance languages

As Classical Latin developed to Late Latin, and eventually into the modern Romance languages, it experienced several phonological changes. Notable changes include the following (the precise order of which is uncertain):

• Loss of /h/, in all contexts, and loss of final /m/, in polysyllabic words.
• Monophthongization of /ae̯ oe̯/ to /ɛː eː/ respectively.
• Fortition of /w/ to /β/, then lenition of intervocalic /b/ to /β/. (Later developing to /v/ in many areas.)
• Phonemic (no longer allophonic) loss of /n/ before /s/ and of final in polysyllabic words.
• Phonemic (no longer allophonic) development of /i e/ to /j/ when unstressed and in hiatus.
• Palatalization of the consonants /t d/ by a following /j/.
• Loss of phonemic vowel length, with vowel quality becoming the distinctive factor instead. A number of vowel mergers followed as a result.
• Palatalization of various other consonants by a following /j/.
• Palatalization of /k ɡ/ before front vowels (not everywhere).

Examples

The following examples are both in verse, which demonstrates several features more clearly than prose.

From Classical Latin

Virgil's Aeneid, Book 1, verses 1–4. Quantitative metre (dactylic hexameter). Translation: "I sing of arms and the man, who, driven by fate, came first from the borders of Troy to Italy and the Lavinian shores; he much afflicted both on lands and on the deep by the power of the gods, because of fierce Juno's vindictive wrath."

1. Traditional (19th-century) English orthography

   Arma virúmque cano, Trojæ qui primus ab oris

   Italiam, fato profugus, Lavíniaque venit

   Litora; multùm ille et terris jactatus et alto

   Vi superum, sævæ memorem Junonis ob iram.

2. Modern orthography with macrons

   Arma virumque canō, Troiae quī prīmus ab ōrīs

   Ītaliam, fātō profugus, Lāvīniaque vēnit

   Lītora; multum ille et terrīs iactātus et altō

   Vī superum, saevae memorem Iūnōnis ob īram.

3. Modern orthography with macrons and without u and v distinction

   Arma uirumque canō, Troiae quī prīmus ab ōrīs

   Ītaliam, fātō profugus, Lāuīniaque uēnit

   Lītora; multum ille et terrīs iactātus et altō

   Uī superum, saeuae memorem Iūnōnis ob īram.

4. Modern orthography without macrons

   Arma virumque cano, Troiae qui primus ab oris

   Italiam, fato profugus, Laviniaque venit

   Litora; multum ille et terris iactatus et alto

   Vi superum, saevae memorem Iunonis ob iram.

5. Classical Roman pronunciation

   [ˈär.mä wɪ|ˈɾʊŋ.kʷɛ ˈkä|n̪oː ˈt̪ɾɔj|jäe̯ kʷiː |ˈpɾiː.mʊs̠‿ä‖ˈb‿oː.ɾiːs̠

   iː.ˈt̪ä.l̪i|ä̃ː ˈfäː|t̪oː ˈprɔ.fʊ|ɡʊs̠ ɫ̪äː|ˈwiː.n̪jä.kʷɛ ‖ˈweː.n̪ɪt̪

   ˈl̪iː.t̪ɔ.ɾä | ˈmʊɫ̪.t̪(ʷ)‿ɪl̪|l̪‿ɛt̪ ˈt̪ɛr|riːs̠ jäk|ˈt̪äː.t̪ʊ.s̠‿ɛ‖ˈt̪.äɫ̪.t̪oː

   wiː ˈs̠ʊ.pɛ|ɾʊ̃ː ˈs̠äe̯|wäe̯ ˈmɛ.mɔ|ɾɛ̃ː juː|ˈn̪oː.n̪ɪ.s̠‿ɔ‖ˈb‿iː.ɾä̃ː]

Note the elisions in mult(um) and ill(e) in the third line. For a fuller discussion of the prosodic features of this passage, see Dactylic hexameter.

Some manuscripts have "Lāvīna" rather than "Lāvīnia" in the second line.

From Medieval Latin

Beginning of Pange Lingua Gloriosi Corporis Mysterium by Thomas Aquinas (13th century). Rhymed accentual metre. Translation: "Extol, tongue, the mystery of the glorious body and the precious blood, which the fruit of a noble womb, the king of nations, poured out as the price of the world."

1. Traditional orthography as in Roman Catholic service books (stressed syllable marked with an acute accent on words of three syllables or more).

   Pange lingua gloriósi

   Córporis mystérium,

   Sanguinísque pretiósi,

   quem in mundi prétium

   fructus ventris generósi

   Rex effúdit géntium.

2. Italianate ecclesiastical pronunciation:

   [ˈpän̠ʲd͡ʒe ˈl̺iŋɡwä ɡl̺oɾiˈɔːsi

   ˈkɔrpoɾis misˈt̪eːɾium

   säŋɡwiˈn̺iskwe pɾet̪t̪͡s̪i'ɔːsi

   kwɛm in̺ ˈmun̪d̪i ˈpɾɛt̪ː͡s̪ium

   ˈfɾukt̪us ˈvɛn̪t̪ɾis d͡ʒen̺eˈɾɔːsi

   ˈɾɛks efˈfuːd̪it̪ ˈd͡ʒen̪t̪͡s̪ium]

See also

• Latin alphabet
• Latin grammar
• Latin regional pronunciation
• Traditional English pronunciation of Latin
• Deutsche Aussprache des Lateinischen (in German) – traditional German pronunciation
• Schulaussprache des Lateinischen (in German) – revised "school" pronunciation
• Traditional French pronunciation (in French)

Notes

1. Allen 1978 (p. 17) judges the evidence to favour /kʷ ɡʷ/, while Cser 2020 (§2.2.2) comes to the opposite conclusion. The relevant facts, per the latter, are as follows:
   
   ⟨qu⟩ enjoyed a wide lexical distribution, while ⟨gu(V)⟩ was limited to a dozen or so words, where it was always preceded by /n/. The grammarian Velius Longus indicated that the ⟨u⟩ of ⟨qu⟩ was in some way different from /w/ in general. No geminate *⟨ququ⟩ is attested, whereas all (other) Latin stops are also found as geminates. Sequences of obstruent + glide are rare in Classical Latin. In poetry, whenever sequences of stop + glide occur in medial position, the scansion reveals that can be split across syllables, but this is never the case for ⟨qu⟩. Neither ⟨qu⟩ nor ⟨gu⟩ are ever followed by a consonant, unlike any (other) Latin stop, nor can they occur word-finally. The voicing contrast between ⟨nqu⟩ and ⟨ngu⟩ is not found in any (other) sequence of three consonants. Assimilation of the prefix ad- to a following ⟨qu⟩ is relatively rare, which is also the case when ad- is followed by a consonant cluster. The Proto-Indo-European predecessor of Latin ⟨qu⟩ is, in many cases, reconstructed as a single consonant */kʷ/, notably distinct from sequences of */kw/. Occasionally Latin /w/ scans as a vowel in poetry, when preceded by /s/ or /l/, but this is never the case for the ⟨u⟩ of ⟨qu⟩.
2. epistula ad tiburtes, a letter by praetor Lucius Cornelius from 159 BC, contains the first examples of doubled consonants in the words potuisse, esse, and peccatum (Clackson & Horrocks 2007, pp. 147, 149).
3. There is, however, a fringe view that the short high vowels /i u/ were tense and that the long mid vowels /eː oː/ were lax , implying that none of the Latin short-long vowel pairs differed in quality (Calabrese 2005).
4. The simplification was already common in rural speech as far back as the time of Varro (116 BC – 27 BC): cf. De lingua Latina, 5:97 (referred to in Smith 2004, p. 47).
5. This approach is also recommended in the help page for the Latin Misplaced Pages.

References

1. Covington, Michael. (2019). Latin Pronunciation Demystified.
2. Latin Accents.
3. ^ Sihler 1995, pp. 20–22, §25: the Italic alphabets
4. ^ Allen 1978, p. 25
5. Allen 1978, p. 17
6. Allen 1978, pp. 19, 20
7. Allen 1978, pp. 12–13
8. ^ Allen 1978, pp. 26, 27
9. ^ Clackson & Horrocks 2007, p. 190
10. Levy 1989, p. 150
11. ^ Allen 1978, pp. 46
12. ^ Allen 1978, pp. 35–37
13. Allen 1978, pp. 34, 35
14. Lloyd 1987, p. 80
15. ^ Lloyd 1987, p. 81
16. ^ Allen 1978, pp. 30, 31
17. ^ Allen 1978, pp. 27–30
18. Allen 1978, pp. 23–25
19. Allen & Greenough 2001, §10d
20. ^ Allen 1978, pp. 71–73
21. Allen 1978, p. 33
22. Cser 2020, §4.9. In footnote 206, he adds: "The evidence has been thoroughly assessed in the diachronic literature; see Sen (2012: 472–3; 2015: 15 sqq.), Meiser (1998: 68–9), Leumann (1977: 85–7)."
23. ^ Allen 1978, pp. 37–40
24. ^ Allen 1978, pp. 40–42
25. Allen 1978, pp. 43–45
26. Allen 1978, p. 11
27. ^ Allen 1978, p. 42
28. ^ Allen 1978, pp. 15, 16
29. Allen 1978, p. 45
30. Allen & Greenough 2001, §1a
31. ^ Clackson & Horrocks 2007, p. 96
32. Allen 1978, p. 15
33. Allen 1978, p. 23
34. Sturtevant 1920, pp. 115–116
35. Allen & Greenough 2001, §6d, 11c
36. Allen 1978, pp. 47–49
37. Allen 1978, p. 51
38. Allen 1978, pp. 51, 52
39. Allen 1978, p. 52
40. Allen 1978, p. 56
41. Allen 1978, p. 59
42. Clackson 2008, p. 77
43. Allen 1978, pp. 55, 56
44. Ward 1962
45. Clackson & Horrocks 2007, pp. 273, 274
46. Allen 1978, pp. 65
47. "Pronouncing Italian double consonants". www.italianlanguageguide.com. Retrieved 2019-03-03.
48. Sihler 1995, p. 174.
49. Allen 1978, pp. 33–34
50. ^ Traina, Alfonso; Perini, Giorgio Bernardi (1998), Propedeutica al latino universitario (in Italian), pp. 62–63
51. ^ Traina, Alfonso (2002). L'alfabeto e la pronunzia del latino (5 ed.). Bologna: Pàtron. pp. 44 and 59–60.. Traina cites various sources: Quintilianus (I, 7, 26) certifies that his teachers had the group 'vo' written in its epoch by now writing 'vu'; Velio Longo (VII 58 K.) attests the spelling 'quu' pronounced ; various inscriptions from different periods even show the spelling 'cu' for 'quu'.
52. W. C. de Melo (2007), Review: Cesare Questa, La metrica di Plauto e Terenzio. Bryn Mawr Classical Review.
53. W. Sidney Allen (1978), Vox Latina, 2nd edition, pp. 85–86.
54. Fortson 2004, p. 254
55. Sturtevant 1920, pp. 207–218
56. Allen 1978, p. 83
57. Allen 1978, p. 87
58. Allen & Greenough 2001, §11
59. ^ Allen & Greenough 2001, §7
60. ^ Allen 1978, pp. 89–92
61. Allen 1978, p. 86
62. Allen & Greenough 2001, p. 400, section 612 e, f
63. For example, Henri Estienne's Dictionarium, seu Latinae linguae thesaurus (1531)
64. Gilbert 1939
65. Brittain 1955.
66. Allen 1978, p. 108
67. Liber Usualis, p. xxxvj

Bibliography

• Alkire, Ti; Rosen, Carol (2010). Romance Languages: A Historical Introduction. Cambridge University Press. ISBN 978-0521889155.
• Allen, William Sidney (1978) . Vox Latina—a Guide to the Pronunciation of Classical Latin (2nd ed.). Cambridge University Press. ISBN 0-521-37936-9.
• Allen, William Sidney (1987). Vox Graeca: The Pronunciation of Classical Greek. Cambridge University Press. ISBN 978-0521335553.
• Allen, Joseph A.; Greenough, James B. (2001) . Mahoney, Anne (ed.). New Latin Grammar for Schools and Colleges. Newburyport, Massachusetts: R. Pullins Company. ISBN 1-58510-042-0.
• Brittain, Frederick (1955). Latin in Church. The History of its Pronunciation (2nd ed.). Mowbray.
• Calabrese, Andrea (2005). "On the Feature [ATR] and the Evolution of the Short High Vowels of Latin into Romance" (PDF). University of Connecticut Working Papers in Linguistics. 13: 33–78. Archived from the original (PDF) on 13 November 2012.
• Clackson, James; Horrocks, Geoffrey (2007). The Blackwell History of the Latin Language. Oxford, UK: Blackwell Publishing. ISBN 978-1-4051-6209-8.
• Clackson, James (2008). "Latin". In Roger D. Woodard (ed.). The Ancient Languages of Europe. Cambridge University Press. ISBN 978-0-521-68495-8.
• Cser, András (2020). "The phonology of Classical Latin". Transactions of the Philological Society. 118. Publications of the Philological Society: 1–218. doi:10.1111/1467-968X.12184. S2CID 219404384.
• Fortson, Benjamin W. IV (2004). Indo-European Language and Culture: An Introduction. Wiley. ISBN 978-1-4051-0315-2.
• Gilbert, Allan H (June 1939). "Mock Accents in Renaissance and Modern Latin". Publications of the Modern Language Association of America. 54 (2): 608–610. doi:10.2307/458579. JSTOR 458579. S2CID 164184102.
• Hayes, Bruce (1995). Metrical stress theory: principles and case studies. University of Chicago. ISBN 9780226321042.
• Leppänen, Ville; Alho, Tommi (November 2018). "On The Mergers Of Latin Close-Mid Vowels". Transactions of the Philological Society. 116 (3): 460–483. doi:10.1111/1467-968X.12130.
• Levy, Harry L. (1989). A Latin Reader for Colleges. University of Chicago Press.
• Lloyd, Paul M. (1987). From Latin to Spanish. Diane Publishing. ISBN 978-0-87169-173-6.
• Neidermann, Max (1945) . Précis de phonétique historique du latin (2 ed.). Paris.{{cite book}}: CS1 maint: location missing publisher (link)
• McCullagh, Matthew (2011). "The Sounds of Latin: Phonology". In James Clackson (ed.). A Companion to the Latin Language. Blackwell Publishing. ISBN 978-1405186056.
• Pekkanen, Tuomo (1999). Ars grammatica—Latinan kielioppi (in Finnish and Latin) (3rd-6th ed.). Helsinki: Helsinki University Press. ISBN 951-570-022-1.
• Pope Pius X (November 22, 1903). "Tra le Sollecitudini". Rome, Italy: Adoremus. Retrieved 15 June 2013.
• Pope, M. K. (1952) . From Latin to Modern French with especial consideration of Anglo-Norman (revised ed.). Manchester: Manchester University Press.
• Sihler, Andrew L. (1995). New Comparative Grammar of Greek and Latin. Oxford: Oxford University Press. ISBN 0-19-508345-8.
• Smith, Jane Stuart (2004). Phonetics and Philology: Sound Change in Italic. Oxford University Press. ISBN 0-19-925773-6.
• Sturtevant, Edgar Howard (1920). The pronunciation of Greek and Latin. Chicago: University of Chicago Press.
• Ward, Ralf L. (June 1962). "Evidence For The Pronunciation Of Latin". The Classical World. 55 (9): 273–275. doi:10.2307/4344896. JSTOR 4344896.
• Wingo, E. Otha (1972). Latin Punctuation in the Classical Age. De Gruyter Mouton. ISBN 978-9027923233.

Further reading

• Hall, William Dawson, and Michael De Angelis. 1971. Latin Pronunciation According to Roman Usage. Anaheim, CA: National Music Publishers.
• Trame, Richard H. 1983. "A Note On Latin Pronunciation." The Choral Journal 23, no. 5: 29.

External links

• phonetica latinæ: Classical and ecclesiastical Latin pronunciation with audio examples
• "Ecclesiastical Latin". Catholic Encyclopedia. 1910.
• Lord, Frances Ellen (2007) . The Roman Pronunciation of Latin: Why we use it and how to use it. Gutenberg Project.
• glottothèque - Ancient Indo-European Grammars online, an online collection of video lectures on Ancient Indo-European languages, including lectures about the phonology and writing systems of Early Latin

1. Trame, Richard H. (1983). "A Note On Latin Pronunciation". The Choral Journal. 23 (5): 29. ISSN 0009-5028. JSTOR 23546146.

• Latin language
• Italic phonologies
• Indo-European Latin-script orthographies