あたま 頭のさえる Show inflections LinksSentence search for 頭のさえるSentence search for あたまのさえるSentence search for 頭の冴えるKanji details for 頭Edit in JMdict Expressions (phrases, clauses, etc.), Ichidan verb1. to be clear-headed; to be brainySee also 頭がさえる あたまがさえる, often prenom. as 頭のさえたOther forms頭の冴える 【あたまのさえる】 Discussions Log in to talk about this word.