Definition of "renege on" []

• Fail to fulfill a promise or obligation (verb)

WordNet. Princeton University. 2010.

• ""Sorry, fathead; I'll have to renege on this one.""
• "One proposed origin is in the southwest English shires: fainaigue, “to cheat; to renege on a debt; to deceive by flattery,” perhaps associated with the Old French fornier, “to deny.”"
• "Maury Taylor would sell his soul to the devil, then renege on the deal if he got a better offer and higher ratings were involved."