見み切きりを付つける

expression, ichidan verb

give up as hopeless; wash one's hands of

Used when one decides to abandon a person, plan, or situation after judging it to be futile or beyond help. Often implies a final, resigned decision.

• 彼かれは何なん度ども失しっ敗ぱいした事じ業ぎょうに見み切きりを付つけた。

  He gave up on the business that had failed many times.

• あの政せい治じ家かにはもう見み切きりをつけたほうがいい。

  You'd better wash your hands of that politician.