1A lasting feeling of anger and ill will toward someone who has wronged you; a grudge.
彼女はその一件以来、ずっと恨みを抱いている。
She has held a grudge ever since that incident.
恨みを持ち続けても、自分がつらくなるだけだ。
Holding onto a grudge only ends up hurting yourself.
彼に恨みはないが、あの態度は許せない。
I don't hold a grudge against him, but I can't forgive that attitude.
事件の背景には長年の恨みがあったらしい。
It seems there was a long-standing grudge behind the incident.
2A feeling of regret that something did not go as hoped; often written with the kanji 憾み.
あと一歩及ばなかったのは憾みが残る結果だった。
Falling just one step short left a lingering sense of regret.
準備不足だった憾みは否めない。
There's no denying the regret that preparation was insufficient.