expression, godan verb (-su)
vent one's frustration; let off steam
Used when someone releases built-up anger or irritation, often through an action or outburst.
彼はカラオケで鬱憤を晴らした。
He let off steam by singing karaoke.
運動してうっぷんを晴らそう。
Let's work out and vent our frustrations.
Standard kanji spelling; 鬱憤 is a common compound for pent-up anger.
Kana spelling is common when the kanji 鬱 is considered difficult or in casual writing.
ストレス発散 is a broader term for stress relief, while 鬱憤を晴らす specifically implies releasing pent-up anger or resentment.
鬱憤 (pent-up anger) + を + 晴らす (to clear away). The expression literally means 'to clear away pent-up anger'.