Proto-Tsezian: *-m
Meaning: a negative particle
Tsezi: -n-č̣
Ginukh: -go-m
Khvarshi: -b-č̣
Inkhokvari: -b-
Comments: PTsKh *-m (only in compounds with other particles; Tsez. -n- in -nč̣- is a result of assimilation). Reasons for denasalisation in Khvarsh. and Inkh. are not quite clear.