dare, daring -- (a challenge to do something dangerous or foolhardy; "he could never refuse a dare")
boldness, daring, hardiness, hardihood -- (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")
Overview of verb dare
The verb dare has 3 senses
make bold, dare, presume -- (take upon oneself; act presumptuously, without permission; "How dare you call my lawyer?")
dare -- (to be courageous enough to try or do something; "I don't dare call him", "she dares to dress differently from the others")
audacious, daring, venturesome, venturous -- (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")
avant-garde, daring -- (radically new or original; "an avant-garde theater piece")