adventuresome, adventurous, aggressive, aleatory, ambitious, audacious, bold, brave, chancy, courageous, daredevil, daring, determined, dicey, doughty, driving, dynamic, enterprising, experimental, fearless, foolhardy, forceful, full of risk, game, go-ahead, hazardous, hustling, intrepid, overbold, plucky, pushful, pushing, pushy, rash, reckless, resolute, riskful, risky, speculative, spirited, sporting, stalwart, stout, sturdy, temerarious, tentative, trial, up-and-coming, venturous, wildcat, willing