Adai languageAdai is an extinct Native American language that was spoken in northwestern Louisiana.ClassificationIt was once proposed that there may be a connection between Adai and the nearby Caddoan languages, but this now seems unlikely.VocabularyAdai is known only from a list of 275 words from 1804 by John Sibley. The manuscript word list below has been reproduced from Grant's transcriptions.Notable places language was spoken Natchitoches, Louisiana Natchitoches Parish, Louisiana Sabine Parish, Louisiana Robeline, Louisiana Isle Brevelle Los Adaes Fort St. Jean Baptiste State Historic Site San Antonio