extremely bold or daring; recklessly brave; fearless

an audacious explorer.

extremely original; without restriction to prior ideas; highly inventive

an audacious vision of the city's bright future.

recklessly bold in defiance of convention, propriety, law, or the like; insolent; brazen.

lively; unrestrained; uninhibited

an audacious interpretation of her role.

adjective

cautious , gentle , humble , meek , mild , modest , reserved , timid , yielding , shy

adjective

adventurous , aweless , bold , brassy , brave , cheeky * , courageous , daredevil , dauntless , enterprising , fearless , foolhardy , gutty , intrepid , nervy , rash , resolute , risky , smart ass , unafraid , uncurbed , undaunted , ungoverned , valiant , venturesome , assuming , bantam , brash , brazen , defiant , disrespectful , forward , impertinent , impudent , insolent , rude , saucy , shameless , doughty , fortitudinous , gallant , game , hardy , heroic , mettlesome , plucky , stout , stouthearted , valorous , adventuresome , daring , venturous , assumptive , boldfaced , cheeky , contumelious , familiar , malapert , overconfident , pert , presuming , presumptuous , pushy , sassy , smart , arrogant , gutsy , imprudent , reckless , spirited , unabashed.bold , wild