無責任むせきにん Common Noun I-adj English jmdict 1 noun (common) (futsuumeishi) adjectival nouns or quasi-adjectives (keiyodoshi) irresponsibility 彼は怠惰で無責任だった。結局、彼は退社を命じられた。 He was lazy and irresponsible. Thus, he was told to leave the company.