うっかり Common word JLPT N2 LinksSentence search for うっかりSentence search for ウッカリEdit in JMdict Adverb (fukushi), Adverb taking the 'to' particle, Suru verb1. carelessly; thoughtlessly; inadvertentlyOnomatopoeic or mimetic wordOther formsウッカリ Discussions Log in to talk about this word.