Noun: audaciousness o'dey-shus-nus
- Fearless daring
"He had the audaciousness to challenge the champion to a match";
- audacity, temerity
- Aggressive boldness or unmitigated effrontery
"The audaciousness of his lies shocked everyone";
- audacity
Type of: boldness, brass, brass neck [Brit, informal], cheek, daring, face, hardihood, hardiness, nerve