to renege on a deal/debt/contract, etc.
违背协定、赖债、违背合约等
牛津词典
If someone reneged on a deal, they could never trade here again.
谁要是违背了约定，就永远不能再在这里进行交易。
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?
期刊摘选
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.
期刊摘选
If you renege again, I am going to gut you.
如果你再食言, 我会挖出你的内脏!
期刊摘选
The company, a major energy supplier in New England, provoked justified outrage in Vermont last week when it announced it was reneging on a longstanding commitment to abide by the strict nuclear regulations.
出自-2012年考研阅读原文"She backed out of her promise"
