咔 咔 ka3
(used as phonetic "ka")

strokes 8
radical
口
口
strokes after radical 5
咔嚓 咔嚓 ka1 cha1
(onom.) breaking or snapping; (coll.) cut it out; stop it; also written 喀嚓

咔嗒 咔嗒 ka1 da1
(onom.) click; clatter

咔哒声 咔噠聲 ka3 da5 sheng1
(onom.) clunk

咔叽 咔嘰 ka3 ji1
khaki (loanword)