daring

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"

radically new or original; "an avant-garde theater piece"

a challenge to do something dangerous or foolhardy; "he could never refuse a dare"

the trait of being willing to undertake things that involve risk or danger; "the proposal required great boldness"; "the plan required great hardiness of heart"