Spartan, Trojan, adventuresome, adventurous, assured, audacious, cool, daredevil, daring, dauntless, doughty, fearless, fiery, fire-eating, gallant, game, gritty, gutsy, hardy, heroic, high-spirited, impavid, indomitable, intrepid, lionhearted, martial, nervy, plucky, red-blooded, resolute, stalwart, stand tall, stouthearted, strong, tenacious, tough, unafraid, undaunted, valiant, valorous, venturesome, venturous