lunatic

adj : (informal) some insane and believed to be affected by the

phases of the moon [syn: {moonstruck}]

n 1: an insane person [syn: {madman}, {maniac}]

2: a reckless impetuous irresponsible person [syn: {daredevil},

{madcap}, {hothead}, {swashbuckler}, {harum-scarum}]