Apalachee language
Apalachee was a Muskogean language of Florida. It was closely related to Koasati and Alabama.
The language is known primarily from one document, a letter written in 1688 to Charles II of Spain. Geoffrey Kimball has produced a grammatical sketch and a vocabulary of the language based on the contents of the letter.
Haas showed that Apalachee belonged to the same branch of the Muskogean family as Koasati, Alabama, and Hitchiti.Phonology
Consonants
Vowels may also be elongated.