WordNet sense 1 (having or showing valor):

valiant, valorous

WordNet sense 2 (resolutely courageous):

undaunted

WordNet sense 3 (used especially of persons):

stalwart

WordNet sense 4 (willing to face danger):

game, mettlesome, spunky

WordNet sense 5 (unflinching in battle or action):

gallant

WordNet sense 6 (showing extreme courage; especially of actions courageously undertaken in desperation as a last resort):

heroic

WordNet sense 7 (possessing or displaying courage; able to face and deal with danger or fear without flinching):

brave