reneging Definition

renege
renegue
verb reneged, reneging

intr
1. To go back on (a promise, agreement, deal, etc).

Thesaurus: default, back down, back off, welsh (slang); Antonym: come through.
Form: renege on something (often)
2. To renounce (a promise, etc) or desert (a person, faith, etc).
3. cards.
To revoke (sense 2).

Derivative: reneger
noun

Etymology: 16c: from Latin renegare to renounce, from negare to deny.