ま いつの間にか Common word JLPT N2 LinksSentence search for いつの間にかSentence search for いつのまにかSentence search for 何時の間にかKanji details for 間Edit in JMdict Adverb (fukushi)1. before one knows; before one becomes aware of; unnoticed; unawaresOther forms何時の間にか 【いつのまにか】 Discussions Log in to talk about this word.