くせ 癖になる Show inflections LinksSentence search for 癖になるSentence search for くせになるSentence search for クセになるKanji details for 癖Edit in JMdict Expressions (phrases, clauses, etc.), Godan verb with 'ru' ending1. to become a habit; to be addictive; to be moreishUsually written using kana aloneOther formsクセになる Discussions Log in to talk about this word.