|Native to||United States|
|Extinct||late 19th century|
Pre-contact distribution of Adai
Adai (also Adaizan, Adaizi, Adaise, Adahi, Adaes, Adees, Atayos) is an extinct language that was spoken in northwestern Louisiana. It is very poorly documented, being known only from a list of 275 words from 1804, so classification is probably impossible. It was once proposed that there may be a connection between Adai and the nearby Caddoan languages, but this now seems unlikely.
- Campbell, Lyle. (1997). American Indian languages: The historical linguistics of Native America. New York: Oxford University Press. ISBN 978-0-19-509427-5
- Mithun, Marianne. (1999). The languages of Native North America. Cambridge: Cambridge University Press. ISBN 0-521-23228-7 (hbk); ISBN 0-521-29875-X.
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