defy /dɪˈfaɪ/verb 4noun 1forms 5 verb4 •To refuse to obey.If you defy your teacher you may end up in detention. •To not conform to or follow a pattern, set of rules or expectations. •To challenge (someone) or brave (a hazard or opposition).I once again / Defie thee to the trial of mortal fight. — 1671 •(no longer used) To renounce or dissolve all bonds of affiance, faith, or obligation with; to reject, refuse, or renounce.For thee I have defied my constant mistress. — 1603 noun1 •(no longer used) A challenge.And, safe intrench'd within, her foes without defies — 1687 formsdefied · defying · defies · defieth · defiest