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

讒言[zangen] false charge
讒口[zankou] false charge
讒臣[zanshin] false subject (vassal)
讒誣[zanbu] slander

讒謗[zanbou] libel
讒訴[zanso] false charges
罵詈讒謗[barizanbou] reviling
讒する[zansuru] to slander