Synonyms to devil-may-care

accident prone, breakneck, careless, desperate, furious, harum-scarum, hasty, headlong, hotheaded, hurried, impetuous, mad, overeager, overenthusiastic, overzealous, precipitant, precipitate, precipitous, reckless, slap-bang, slapdash, wanton, wild, adventurous, adventuresome, adversary, aggressive, aleatory, ambitious, antagonist, anti, assaulter, attacker, audacious, bold, brash, brave, chancy, con, courageous, daredevil, daring, death-defying, dicey, doughty, driving, dynamic, enterprising, fire-eating, foolhardy, forceful, forward, full of risk, go-ahead, harebrained, hazardous, hustling, imprudent, intrepid, madbrain, madbrained, madcap, match, opposer, oppugnant, overbold, overconfident, presumptuous, pushful, pushing, pushy, rash, riskful, risky, speculative, temerarious, up-and-coming, venturesome, venturous, wild-ass, wildcat, apathetic, Laodicean, Olympian, abeyant, affording no hope, aloof, anesthetic, ataractic, backward, balking, balky, benumbed, blah, blase, bleak, bored, callous, casual, cataleptic, catatonic, centrist, ch