怨えん恨こん

noun

enmity; grudge; deep-seated resentment

A strong, lingering ill will or hatred, often with a desire for revenge. More intense and literary than 恨み (うらみ).

• 彼かれは長なが年ねんの怨えん恨こんから復ふく讐しゅうを誓ちかった。

  He swore revenge out of years of deep-seated resentment.

• 二人ふたりの間あいだには深ふかい怨えん恨こんがある。

  There is deep enmity between the two.