Usila Chinantec

Usila is a Chinantec language of Mexico. It is most similar to Tlacoatzintepec Chinantec, with which it has 50% intelligibility.

Phonology

Like other Chinantecan and Mazatec languages, Usila Chinantec is a tonal language noted for having whistled speech. Its tone system is unusually finely graded, however, with five register tones and four contour tones.