a reckless impetuous irresponsible person

[ Syn: daredevil , hothead , swashbuckler , lunatic , harum-scarum ]

characterized by undue haste and lack of thought or deliberation; a hotheaded decision; liable to such impulsive acts as hugging strangers; an impetuous display of spending and gambling; madcap escapades; (`brainish is archaic)

[ Syn: hotheaded , impulsive , impetuous , tearaway , brainish ]