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audacious

[aw-dey-shuh s] /ɔˈdeɪ ʃəs/
adjective
1.
extremely bold or daring; recklessly brave; fearless:
an audacious explorer.
2.
extremely original; without restriction to prior ideas; highly inventive:
an audacious vision of the city's bright future.
3.
recklessly bold in defiance of convention, propriety, law, or the like; insolent; brazen.
4.
lively; unrestrained; uninhibited:
an audacious interpretation of her role.
Origin
1540-1550
1540-50; audaci(ty) + -ous
Related forms
audaciously, adverb
audaciousness, noun
unaudacious, adjective
unaudaciously, adverb
unaudaciousness, noun
Synonyms
1. courageous, intrepid, dauntless, venturesome. 3. unabashed, shameless; impertinent, forward.
Antonyms
1. cowardly.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for audaciousness

audacious

/ɔːˈdeɪʃəs/
adjective
1.
recklessly bold or daring; fearless
2.
impudent or presumptuous
Derived Forms
audaciously, adverb
audaciousness, audacity (ɔːˈdæsɪtɪ) noun
Word Origin
C16: from Latin audāx bold, from audēre to dare
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for audaciousness
audacious
1540s, "confident, intrepid," from L. audacia "daring, boldness, courage," from audax "bold, daring," from audere "to dare." Bad sense of "shameless" is attested from 1590s. L. audax also had a good and a bad sense and could mean "audacious, rash, foolhardy."
Online Etymology Dictionary, © 2010 Douglas Harper
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