the mistake of not following suit when able to do so
fail to fulfill a promise or obligation;
"She backed out of her promise"
- Any more colourful candidate could renege on a deal.
- You will almost surely have to renege on some of these promises.
- It says firmly that the EU must not renege on its promise.
- But there is also a temptation to renege to gain sales, much as one prisoner might end up ratting on another.
Such..rogues..Renege, affirm, and turn their halcyon beaks.出自：King Lear , Shakespeare