熱(あつ)い

あつい
i-adjective
hot (objects); passionate; fervent
descriptive
See also: 厚(あつ)い (thick), 暑(あつ)い (hot (weather))
Conjugation
AffirmativeNegative
Present熱(あつ)い熱(あつ)くない
Past熱(あつ)かった熱(あつ)くなかった
て form熱(あつ)くて熱(あつ)くなくて
Adverbial熱(あつ)く—
Conditional ば熱(あつ)ければ熱(あつ)くなければ
Conditional たら熱(あつ)かったら熱(あつ)くなかったら
1. hot (objects, liquids)
High temperature of objects or liquids that can be touched.
コーヒーが熱(あつ)い。
The coffee is hot.
2. passionate; fervent; ardent
Strong emotional intensity or enthusiasm.
胸(むね)が熱(あつ)くなる。
My heart feels warm. / I feel moved.
彼(かれ)は熱(あつ)い思(おも)いで夢(ゆめ)を語(かた)った。
He spoke of his dreams with passion.

熱(あつ)い refers to hot objects/liquids and passionate feelings.

Distinction from similar words

  • 熱(あつ)い: hot to the touch (objects, liquids); passionate
  • 暑(あつ)い: hot weather, uncomfortable heat
  • 厚(あつ)い: thick (objects)

Common expressions

Forms

  • Adverbial: 熱(あつ)く
  • Noun form: 熱(あつ)さ (heat intensity)

Idiomatic

Related Words

Antonym: 冷(つめ)たい (cold (to the touch))
Compare: 暖(あたた)かい (warm)
Related: お湯(ゆ) (hot water)
Compare: 熱々(あつあつ) (piping hot)
general
Added 2026.2.4 12:55 · Revised 2026.9.2 13:01
09500/09888_atsui