1. (v. t.) To renounce or dissolve all bonds of affiance, faith, or obligation with; to reject, refuse, or renounce.

2. (v. t.) To provoke to combat or strife; to call out to combat; to challenge; to dare; to brave; to set at defiance; to treat with contempt; as, to defy an enemy; to defy the power of a magistrate; to defy the arguments of an opponent; to defy public opinion.

3. (n.) A challenge.

affront attack baffle balk battle cry be a man be proof against bear up bear up against beard bid defiance bid to combat blast brave brazen out break break the law breast bring before bring forward bring up call out care naught for cartel challenge checkmate circumvent confound confront confront with contravene counter counteract countermand counterwork cross dare dash declare war defeat defi deride destroy discomfit disconcert discountenance dish disobey disregard disrupt do violence to double dare double-dare elude encounter endure envisage face face out face with flout flummox foil front frustrate gage gage of battle gauntlet gibe glove go counter to have the guts have the nerve hold out hold up ignore infringe knock the chocks lay before levy war on make bold to make war on meet meet squarely mock nonplus not conform not heed not keep not listen not mind not observe open hostilities outdare outface perplex place before present to put it to rebel yell rebuff refuse to cooperate repel repulse resist ridicule ruin sabotage scoff at scorn scotch scout scream defiance set at defiance set at naught set before set naught by show fight spike spoil stand stand up stand up to stare down stem stonewall stump thwart trample on trample underfoot trample upon transgress trespass upset venture violate war cry war whoop withstand