(おとな)げない

おとなげない
adjective-i
childish; immature; unbecoming of an adult
Conjugation
AffirmativeNegative
Present大人(おとな)げない大人(おとな)げなくない
Past大人(おとな)げなかった大人(おとな)げなくなかった
て form大人(おとな)げなくて大人(おとな)げなくなくて
Adverbial大人(おとな)げなく
Conditional ば大人(おとな)げなければ大人(おとな)げなくなければ
Conditional たら大人(おとな)げなかったら大人(おとな)げなくなかったら
1. childish; immature; unbecoming of an adult
Describes behavior that is petty, irritable, or undignified in a way that is inappropriate for a grown-up. Often used self-critically or as a mild rebuke.
大人(おとな)げないことを()ってしまった。
I ended up saying something childish.
(かれ)態度(たいど)大人(おとな)げない。
His attitude is childish.
そんなことで(おこ)るなんて、自分(じぶん)でも大人(おとな)げないと(おも)う。
Getting angry over something like that — even I think it's childish.

Compound of 大人(おとな) (adult) + the suffix 〜げ (an appearance, a quality) + ない (not). Literally 'not having the quality of an adult.'

COMMON COLLOCATIONS:

  • 大人(おとな)げない態度(たいど): childish attitude
  • 大人(おとな)げない発言(はつげん): immature remark
  • 大人(おとな)げないことを()う: say something childish
  • 大人(おとな)げない反応(はんのう): childish reaction

USAGE:
Often applied to small acts of pettiness by an adult — losing temper at a child, refusing to apologize, sulking. Saying 大人(おとな)げなかった about oneself is a common form of mild self-criticism.

SIMILAR WORDS:

  • 子供(こども)っぽい: childish — broader; describes anything reminiscent of a child, including charm
  • 幼稚(ようち): infantile — stronger, often critical of intellectual immaturity
  • 大人(おとな)げない: unbecoming of an adult — focuses specifically on the gap between behavior and age