宿しゅく怨えん

noun

old grudge; long-standing resentment

Refers to a deep-seated, lingering grudge from the past. Often used in literary or dramatic contexts.

• 彼かれは宿しゅく怨えんを晴はらすために復ふく讐しゅうを誓ちかった。

  He swore revenge to settle an old grudge.