Synonyms for Boldness (same or very similar meaning)
WordNet sense 1 (the trait of being willing to undertake things that involve risk or danger):
daring, hardihood, hardinessWordNet sense 2 (impudent aggressiveness):
brass, cheek, face, nerveWordNet sense 3 (the quality of standing out strongly and distinctly):
strikingnessFrom the ODE community, based on WordNetadd/edit