- recklessly bold or daring; fearless
- impudent or presumptuous
WordReference Random House Learner's Dictionary of American English © 2026
au•da•cious /ɔˈdeɪʃəs/USA pronunciation
adj.
au•da•cious•ness, n. [uncountable]
WordReference Random House Unabridged Dictionary of American English © 2026- extremely bold or daring:an audacious plan to row a boat across the Atlantic.
- extremely impolite;
impudent:audacious behavior that would be punished.
au•da•cious•ness, n. [uncountable]
au•da•cious
(ô dā′shəs),USA pronunciation adj.
au•da′cious•ly, adv.
au•da′cious•ness, n.
- 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.
- audaci(ty) + -ous 1540–50
au•da′cious•ness, n.
- 1. . courageous, intrepid, dauntless, venturesome. 3. . unabashed, shameless; impertinent, forward.
- 1. . cowardly.
Collins Concise English Dictionary © HarperCollins Publishers::
audacious /ɔːˈdeɪʃəs/ adj
'audacious' also found in these entries (note: many are not synonyms or translations):