noun
pent-up anger; resentment; frustration
Refers to accumulated anger or frustration that has been held inside, often with a nuance of bitterness or grudge. Commonly used in expressions like 鬱憤を晴らす (to vent one's pent-up anger).
彼は長年の鬱憤を晴らすように大声で叫んだ。
He shouted loudly as if to vent his years of pent-up anger.
上司に対する鬱憤がたまっている。
I have built-up resentment toward my boss.
Mixed kanji-kana spelling; less common but acceptable.
鬱 (dense, gloom, pent-up) + 憤 (resentment, anger). The combination conveys the idea of dense, accumulated anger.