The trait of being willing to undertake things that involve risk or danger:
— The proposal required great boldness.

synonyms: daring, hardihood, hardiness.

Roget 574: vigor, power, force; boldness, raciness etc. adj.; intellectual, force; spirit, point, antithesis, piquance, piquancy; verve, glow, fire, warmth; strong language; gravity, sententiousness; elevation, loftiness, sublimity.    eloquence; command of words, command of language.    ... show more

Roget 861: courage, bravery, valor; resoluteness, boldness etc. adj.; spirit, daring, gallantry, intrepidity; contempt of danger, defiance of danger; derring-do; audacity; rashness etc. 863; dash; defiance etc. 715; confidence, self-reliance.    manliness, manhood; nerve, pluck, mettle, game; heart, heart of grace; spunk, guts, face, virtue, hardihood, fortitude, intestinal fortitude; firmness etc. (stability) 150; heart of oak; bottom, backbone, spine etc. (perseverance) 604.1. resolution etc. (determination) 604; bulldog courage.    prowess, heroism, chivalry.    exploit, feat, achievement; heroic deed, heroic act; bold stroke.    man, man of mettle; hero, demigod, Amazon, Hector; lion, tiger, panther, bulldog; gamecock, fighting-cock; bully, fire eater etc. 863.    ... show more

Dutch: onversaagdheid, driestheid, overmoed, stoutmoedigheid, vermetelheid

Impudent aggressiveness:
— I couldn't believe her boldness.

synonyms: brass, cheek, face, nerve.

Polish: zadziorność, zaczepność

The quality of standing out strongly and distinctly.

synonym: strikingness.