Renege
Part of speech: verb
Definition: To break a promise or commitment; to go back on one's word. In a card game, to break one's commitment to follow suit when capable. To deny; to renounce
Revoke
Part of speech: verb
Definition: To cancel or invalidate by withdrawing or reversingTo fail to follow suit in a game of cards
Part of speech: noun
Definition: The act of revoking in a game of cards.A renege; a violation of important rules regarding the play of tricks in trick-taking card games serious enough to render the round invalid.A violation ranked in seriousness somewhat below overt cheating, with the status of a more minor offense only because, when it happens, it is usually accidental.