かい 貝になる Show inflections LinksSentence search for 貝になるSentence search for かいになるKanji details for 貝Edit in JMdict Expressions (phrases, clauses, etc.), Godan verb with 'ru' ending1. to keep one's mouth shut; to clam up; to be silent; to say nothingIdiomatic expression Discussions Log in to talk about this word.