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short temper; quick temper; hot temper; impatience; irritability
短気を起こさないように注意する。
I'll be careful not to lose my temper.
彼は短気な性格でよく知られています。
He's known for his short-tempered personality.
短気は損気という言葉は本当だと思います。
It's true that a short temper is a losing game.