Answer:

reneger

AnswerCrossword Clue
RENEGERWord-breaker
RENEGERBackslider
RENEGEROne who goes back on a promise
RENEGERPerson revoking.
RENEGERViolator of rules at bridge.
RENEGERCheater.
RENEGERDeceiver at cards.
RENEGERPromise breaker.
RENEGERMisplayer at cards.
RENEGERVillain at bridge.
RENEGEROne making a bridge error
RENEGERForgetful bridge player
RENEGERBridge bungler
RENEGEROne going back on a promise
RENEGERBack-pedaler