Jisho

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Godan verb with 'mu' ending, Intransitive verb
1. to put on airs; to affect (e.g. importance); to look wise
  • かれ
  • えら偉そうに
  • すましこんでいる
He's putting on airs.
Other forms
すまし込む 【すましこむ】澄ましこむ 【すましこむ】

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