JMdict: 2411170

頭がきれる 【あたまがきれる】

  1. [exp,v1] to be sharp; to be keen; to be on the ball; to have a mind like a steel trap; to be clever
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Kanji in this word:

Kanji Meanings On Readings Kun Readings
頭 Head, Counter For Large Animals トウ, ズ, ト あたま, かしら, -がしら, かぶり