The Collaborative International Dictionary of English v.0.48:
Audaciousness \Au*da"cious*ness\, n. The quality of being audacious; impudence; audacity. [1913 Webster]WordNet (r) 3.0 (2006):
audaciousness n 1: fearless daring [syn: audacity, audaciousness, temerity] 2: aggressive boldness or unmitigated effrontery; "he had the audacity to question my decision" [syn: audacity, audaciousness]