The Adnyamathanha language (pronounced ), also known as yura ngarwala and other names, and Kuyani, also known as Guyani and other variants, are two closely related Australian Aboriginal languages. They are traditional languages of the Adnyamathanha of and the Kuyani peoples, of the Flinders Ranges and to the west of the Flinders respectively, in South Australia. As of the 2016 Australian census, there were around 140 speakers of Adnyamathanha, making it an endangered language; there have been no speakers of Kuyani recorded since 1975. The first bilingual dictionary of the language was published in November 2020. The name of the witchetty grub comes from Adnyamathanha. Classification While R. M. W. Dixon classifies Adnyamathanha and Guyani as a single language, Ethnologue, Glottolog and AIATSIS treats them as separate languages, L10: Adnyamathanha and L9: Kuyani. Speakers Estimates of the number of people who speak Adnyamathanha are variable, though it is a severely endangered language. According to Oates (1973) there were only 30 speakers, around 20 according to Schmidt in 1990, 127 in the 1996 Australian census, and about 140 counted in the 2016 census. Grammar Adnyamathanha has a complex system of personal pronouns. There are 10 different ways of saying we "you and I" (first person dual), depending on the relationship between the speaker and the addressee. First dictionary (2020) The linguist Bernhard Schebeck travelled to the Nepabunna region in the 1970s, and wrote An Adnyamathanha-English Research Dictionary in 2000, which was "For private, or internal, use only – not for publication". Dorothy Tunbridge, a linguist from Canberra and author of Flinders Ranges Dreaming visited the area in the 1980s. Both contributed much to knowledge of the language, but neither recorded all of the words that were known to local speakers. In November 2020 the first-ever bilingual Adnyamathanha/English dictionary and grammar was published, with translations from and to each language. Compiled by Terrence Coulthard and his wife Josephine, the 400-page Adnyamathanha Culture Guide and Language Book includes descriptions of cultural practices, songlines (muda), the Adnyamathanha kinship system and social history. Terrence, an Adnyamathanha speaker, had been collecting information on the culture and language for 40 years, building on the earlier work by Schebeck and Tunbridge. Linguists and others from Adelaide University's Mobile Language Team helped the couple to finalise work on the book in the 18 months to two years before publication. The Coulthards run Iga Warta, a cultural tourism enterprise, located