ゆだん 油断 Common word JLPT N2 Wanikani level 35 Play audio LinksSentence search for 油断Sentence search for ゆだんKanji details for 油 and 断Edit in JMdict Noun, Suru verb, Intransitive verb1. negligence; carelessness; inattention; unpreparedness Discussions Log in to talk about this word.