Austroasiatic languages
The Austroasiatic language family ("austro" meaning South) is the autochthonous language in Southeast Asia, arrived by migration. Austroasiatic languages of mainland India are the Khasi and Munda languages, including Santali. The languages of the Nicobar islands also form part of this language family. With the exceptions of Khasi and Santali, all Austroasiatic languages on Indian territory are endangered.