the.com/renege
To shake on a deal, then unshake it when nobody's looking.
means To go back on a promise, agreement, or commitment you previously made.
from From Latin renegare, to deny again — the same root that gave us renegade, the deal-breaker as a person.
Card gameIn whist, reneging means illegally failing to follow suit.
PronunciationRhymes with leg or vague, both accepted.
Renegade cousinSame root: one renounces, the other defects entirely.