1. a challenge to do something dangerous or foolhardy;
"he could never refuse a dare"
2. the trait of being willing to undertake things that involve risk or danger;
"the proposal required great boldness"
Adjective
1. disposed to venture or take risks;
"audacious visions of the total conquest of space""an audacious interpretation of two Jacobean dramas""the most daring of contemporary fiction writers""a venturesome investor""a venturous spirit"