JMdict: 2679180

頭がさえる 【あたまがさえる】

  1. [exp,v1] to be clear-headed
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Kanji in this word:

Kanji Meanings On Readings Kun Readings Grade
頭 Head, Counter For Large Animals トウ, ズ, ト あたま, かしら, -がしら, かぶり 2