Reconstruction:Proto-Sino-Tibetan/kak

Etymology

 * Proto-Sino-Tibetan: *khaɣ/khak (Coblin, 1986); *ʔyak ⪤ kak (Matisoff, 1983)
 * Proto-Tibeto-Burman: *kak (Matisoff, STEDT)

Derived from.

Adjective

 * 1) difficult, hard; hardship

Descendants

 * Himalayish
 * Tibeto-Kanauri
 * Bodic
 * Tibetan
 * Written
 * Lolo-Burmese-Naxi
 * Lolo-Burmese
 * Burmish
 * Written