Chitimacha ( or , Sitimaxa) is a language isolate historically spoken by the Chitimacha people of Louisiana, United States. It became extinct in 1940 with the death of the last fluent speaker, Delphine Ducloux. Although no longer spoken, it is fairly extensively documented in the early 20th-century work (mostly unpublished) of linguists Morris Swadesh and John R. Swanton. Swadesh in particular wrote a full grammar and dictionary, and collected numerous texts from the last two speakers, although none of this is published. Language revitalization efforts are underway to teach the language to a new generation of speakers. Tribal members have received Rosetta Stone software for learning the language. As of 2015, a new Chitimacha dictionary is in preparation, and classes are being taught on the Chitimacha reservation. Classification Chitimacha has recently been proposed to be related to, or a member of, the hypothetical Totozoquean language family. An automated computational analysis (ASJP 4) by Müller et al. (2013) found lexical similarities between Chitimacha, Huave, and Totozoquean. However, since the analysis was automatically generated, the grouping could be either due to mutual lexical borrowing or genetic inheritance. An earlier, more speculative, proposal suggested an affinity with the also hypothetical group of Gulf languages. Phonology Brown, Wichmann, and Beck (2014) give the following phoneme inventory based on Morris Swadesh's 1939 analysis. Consonants Vowels Orthography Transcription has been done by researchers in a number of orthographies, including French, Spanish, and Americanist. Members of the Chitimacha tribe have developed a practical orthography using the Latin alphabet which does not use diacritics or special characters. It retains elements of the orthography earlier used by Morris Swadesh. Grammar Chitimacha has a grammatical structure which is not dissimilar from modern Indo-European languages but it is still quite distinctive. Chitimacha distinguishes several word classes: verbs, nouns, adjectives (verbal and nominal), quantifiers, demonstratives. Swadesh (1946) states that the remaining word classes are hard to distinguish but may be divided "into proclitics, postclitics, and independent particles". Chitimacha has auxiliaries which are inflected for tense, aspect and mood, such as to be. Polar interrogatives may be marked with a final falling intonation and a clause final post-position. Chitimacha does not appear to have adopted any grammatical features from their interactions with the French, Spanish or Americans. Pronouns Verbs are inflected for person and number of the subject. Ambiguity may be avoided by the use of the personal pronouns (shown in the table