The form of Inuktitut spoken in Greenland is called Greenlandic, or Kalaallisut. It is one of the two official languages on the island, the other being Danish. Inuktitut is also an official language of Nunavut and the Northwest Territories, Canada.
It is related to the Aleut language, and together they form the Eskimo-Aleut family; while this has no proven wider affinities, some postulation has taken place as to the relation of Inuktitut to the Indo-European languages and to the Nostratic superphylum.
Inuktitut employs agglutination heavily.