ゆだん 油断のならない LinksSentence search for 油断のならないSentence search for ゆだんのならないKanji details for 油 and 断Edit in JMdict Expressions (phrases, clauses, etc.), Noun or verb acting prenominally1. treacherous; dangerous; untrustworthy; sneaky; cunning Discussions Log in to talk about this word.