怨おん念ねん

noun

deep-seated grudge; hatred

A persistent, bitter resentment that can linger for a long time, often with a supernatural or vengeful connotation in Japanese culture.

• 彼かれは長なが年ねんの怨おん念ね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 dispel his years-long deep-seated grudge.

• その幽ゆう霊れいは強つよい怨おん念ねんでこの世よに縛しばられていると言いわれている。

  It is said that the ghost is bound to this world by a powerful grudge.