くちと 口を閉ざす Show inflections LinksSentence search for 口を閉ざすSentence search for くちをとざすKanji details for 口 and 閉Edit in JMdict Expressions (phrases, clauses, etc.), Godan verb with 'su' ending1. to keep one's mouth shut; to refuse to talk Discussions Log in to talk about this word.