[2] The language is also called Carnijó, and alternate spellings are Fornió, Furniô, Yahthe, and Iatê.

However, Eduardo Ribeiro of the University of Chicago, who is working on large-scale classification of Brazilian languages, finds no evidence to support this, and treats it as an isolate.

However, long vowels result from assimilation of /h/, are pronounced [Vh] in one dialect, and so are analyzed as /Vh/ sequences.

Contour tones occur allophonically adjacent to voiced consonants.

[3] Some Yaathê words given by Nikulin (2020),[4]: 69–70  cited from Lapenda (1965,[5] 2005 [1968][6]), Barbosa (1991),[7] Costa (1999),[8] F. Silva (2011a,[9] 2011b[10]), and Branner (1887).