Proto-WChadic: *kVĉ̣-
Meaning: 'cut' 1, split' 2, 'fell trees' 3, 'chop'4
Ankwe=Goemai: ḳus 4 [TAS:210] (ḳVs < *ĉ̣Vs)
Mushere: ḳos (pl. of ngap) 1 [TAS:210 'hit, break, chop']
Tangale: kāze 1,3, pl. kase [CLR:98]
Jimbin: kǝ̀ṣ̂-, kǝ̀kǝ̀ṣ̂- 1 [SkNb]
Notes: According to C.Hoffman (personal communication) voiceless emphatics are secondary in languages of the sura gr.