daring

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”

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”