無責任|むせきにんmusekinin[2]nakadaka (mid-high)

1. noun, na-adjectiveirresponsibility
   彼かれは怠惰たいだで無責任むせきにんだった。結局けっきょく、彼かれは退社たいしゃを命めいじられた。↗

   He was lazy and irresponsible. Thus, he was told to leave the company.

• Synonymいい加減いいかげんCasualColloquial. Covers being careless or half-hearted, and also 'enough already', as in 「いい加減にしろ」; 「無責任」 focuses on lacking a sense of responsibility.
• SynonymちゃらんぽらんCasualColloquial. Describes slapdash, unreliable behavior with a frivolous air; 「無責任」 centers on the lack of a sense of responsibility.
• RelatedでたらめCasualColloquial. Refers to talking nonsense, saying things with no basis, as in 「でたらめを言う」; 「無責任」 is about not taking responsibility.
• Antonym責任感せきにんかんNeutralNeutral. The sense of responsibility that carries things through to the end, as in 「責任感が強い」; the direct opposite of 「無責任」.
• Antonym責任あるWrittenWritten/formal prose. Responsible and willing to answer for one's actions, as in 「責任ある態度」; stands opposite 「無責任」.

Use 「無責任」 for lacking a sense of responsibility, as in 「無責任な発言」. For careless or half-hearted attitudes say 「いい加減」, for slapdash frivolity 「ちゃらんぽらん」, for baseless talk 「出鱈目」; the opposites are 「責任感」 and 「責任ある」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 責任感せきにんかんの無ないこと。