ゆだん 油断ならない Show inflections LinksSentence search for 油断ならないSentence search for ゆだんならないKanji details for 油 and 断Edit in JMdict Expressions (phrases, clauses, etc.), I-adjective (keiyoushi)1. treacherous; dangerous; untrustworthy; sneaky; cunning Discussions Log in to talk about this word.