Tags: Language.
Usila is a Chinantec language of Mexico. It is most similar to Tlacoatzintepec Chinantec with which it has 50% intelligibility (intelligibility in the reverse direction is 85% presumably due to greater familiarity in that direction).Like other Chinantec and Mazatec languages Usila Chinantec is a tonal language noted for having whistled speech. Its tone system is unusually detailed however with five register tones.