re·nege 
(rĭ-nĕg, -nĭg)
(rĭ-nĕg, -nĭg)v. re·neged, re·neg·ing, re·neges
v.intr.
1. To fail to carry out a promise or commitment: reneged on the contract at the last minute.
2. Games To fail to follow suit in cards when able and required by the rules to do so.
v.tr.
Archaic
Archaic
To renounce; disown.
n.
The act of reneging.
[Medieval Latin renegāre, to deny; see RENEGADE.]
re·neger n.