Definition of defy

• v. t. - To renounce or dissolve all bonds of affiance, faith, or obligation with; to reject, refuse, or renounce.
• 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.
• n. - A challenge.