Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
Tunumiisut (lit. 'language of the Tunumiit'), also known as East Greenlandic (Danish: østgrønlandsk), is the language of the Tunumiit in East Greenland. It is generally categorised as a dialect of Greenlandic, but verges on being a distinct language. The largest town where it is the primary language is Tasiilaq on Ammassalik Island, with the island's name being derived from the West Greenlandic name of the town.
^ Mennecier, Philippe (1995). Le tunumiisut, dialecte inuit du Groenland oriental: description et analyse. Collection linguistique, 78 (in French). Société de linguistique de Paris, Peeters Publishers.