JMdict: 2255400

熱が入る 【ねつがはいる】

  1. [exp,v5r,vi] to become keen on; to get passionate about
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Kanji in this word:

Kanji Meanings On Readings Kun Readings
Heat, Temperature, Fever, Mania, Passion ネツ あつ.い
Enter, Insert ニュウ, ジュ い.る, -い.る, -い.り, い.れる, -い.れ, はい.る