御猪口[ochoko] small cup
片口鰯[katakuchiiwashi] Japanese anchovy (Engraulis japonica)
白口[shiroguchi] white croaker (Pennahia argentata)
悪たれ口[akutareguchi] abuse
悪口雑言[akkouzougon] all kinds of malicious gossip

異口同音[ikudouon] in concert
異口同音に[ikudouonni] in one voice
ひと口[hitokuchi] mouthful
一口商い[hitokuchiakinai] an immediate definite deal
一口同音[ikkudouon] reading in unison

一癖[hitokuse] trait
飲酒癖[inshuheki] alcoholic addiction
奇癖[kiheki] strange habit
癖者[kusemono] ruffian
潔癖[keppeki] fastidiousness

口癖[kuchiguse] way of saying
習癖[shuuheki] (bad) habit
常用癖[jouyouheki] addiction
性癖[seiheki] disposition
盗癖[touheki] kleptomania