If you renege on the contract, you will pay a huge penalty.

如果你违约，将会赔付巨额违约金。

You reneged on the promise you made before we got married.

你违背了你在我们结婚前的诺言。

The player was warned for reneging.

这个玩家因藏牌而被警告。

He reneged on a promise to leave his wife.

他背弃了诺言 离开了他的妻子

Renege on one's promise.

违背诺言，破坏约定，食言。

If you renege again, I am going to gut you.

如果你再食言，我会挖出你的内脏！

Any more colourful candidate could renege on a deal.

任何不同政见的候选人都可能就此交易而报复。

It says firmly that the EU must not renege on its promise.

报告非常坚定地声称欧盟一定不会食言。

You said you'd come, why did you renege on your promise?

你说你要来的，为什么要背信弃义?。