Jisho

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Godan verb with 'mu' ending, Transitive verb
1. to take for granted; to assume; to be convinced (that); to jump to the conclusion (that)
Godan verb with 'mu' ending, Transitive verb
2. to pretend (to be); to pose (as); to fancy oneself (to be); to feign (e.g. ignorance)
  • ほんにん本人
  • ゆいがどくそん唯我独尊
  • きめこ決め込んでいる
  • ようだ
  • けども
  • まわ周り
  • から
  • 見れば
  • たん単なる
  • わがまま
He's completely convinced of his own greatness but to the people around him he's just a selfish jerk.
Godan verb with 'mu' ending, Transitive verb
3. to go through with (what one decided to do); to persist in doing; to make up one's mind
  • わたし
  • ぎろん議論
  • 終わる
  • しんぼうづよ辛抱強く
  • 待つ
  • こと
  • きめこ決め込んだ
I decided to bide my time and wait for the argument to finish.
Other forms
決めこむ 【きめこむ】決込む 【きめこむ】極め込む 【きめこむ】

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