根ねに持もつ

expression, godan verb (-tsu)

hold a grudge; bear resentment

Used when someone continues to feel resentment or ill will about a past event, often over a long period. The expression literally means 'to hold in the root', implying deep-seated feelings.

• 彼かれは小ちいさな失しっ敗ぱいを根ねに持もつタイプだ。

  He's the type who holds a grudge over small mistakes.

• そんな昔むかしのことをまだ根ねに持もっているの？

  Are you still holding that old thing against me?