(a.) Boldly resisting; insolent; as, a defiant spirit or act\.

aggressive antagonistic arrogant audacious belligerent beyond control bold brash brassy brazen breachy bumptious challenging cheeky cocky contemptuous contumacious daring defying derisive disdainful disobedient disregardful fractious greatly daring gutsy headstrong hostile impatient of control impertinent impudent incorrigible indocile indomitable insolent insubordinate insuppressible intractable irrepressible mutinous obstinate obstreperous ornery out of hand pert pugnacious rebellious recalcitrant refractory regardless of consequences resistant resisting restive saucy self-willed shrewish spunky stubborn unbiddable uncontrollable ungovernable unmalleable unmanageable unmoldable unruly unsubmissive unyielding wild