Tengu is a family of closely related languages spoken by tengu across Kishar. While often considered a single language by non-tengu, in reality there is significant variation between Tengu dialects, sometimes to the degree that they lose mutual intelligibility. This is complicated further by Tengu speakers' propensity of incorporating the vocabulary and sometimes even grammar of other languages - though they remain distinct, the language is often thought to be an unusual variant of Common by those not accustomed to it.