'daredevil' definitions:

Definition of 'daredevil'

From: WordNet
adjective
Presumptuously daring; "a daredevil test pilot having the right stuff" [syn: daredevil, temerarious]
noun
A reckless impetuous irresponsible person [syn: daredevil, madcap, hothead, swashbuckler, lunatic, harum-scarum]