- brash, daredevil, temerarious - presumptuously daring; "a daredevil test pilot having the right stuff"
Antonym: timid (indirect, via bold)
- daredevil, madcap, hothead, swashbuckler, lunatic, harum-scarum - a reckless impetuous irresponsible person
--1 is a kind of adventurer, venturer
--1 has particulars: tearaway