根性

彼は小柄だが、誰よりも根性がある。

He's small, but he has more guts than anyone.

足を痛めながらも、根性で最後まで走り切った。

Even with an injured leg, she ran to the finish on sheer grit.

ここで諦めずに根性を見せてくれ。

Don't give up now. Show us what you're made of.

人の失敗を笑うなんて、根性が悪いね。

Laughing at other people's mistakes shows a nasty streak.

あいつの根性は子供のころから曲がっている。

He's had a twisted nature ever since he was a child.

その甘ったれた根性を叩き直してやる。

I'm going to knock that spoiled attitude out of you.