Synonyms and related words :
arrogant, assured, audacious, brash, brazen, brazenfaced, cocksure, cocky, confident, convinced, decided, determined, foolhardy, hasty, heedless, hubristic, improvident, imprudent, impudent, incautious, indiscreet, injudicious, insolent, overbearing, overbold, overcareless, oversure, overweening, persuaded, poised, pompous, positive, presuming, proud, pushful, pushy, rash, reassured, secure, self-assertive, self-assured, self-confident, self-important, self-reliant, short-sighted, sure, swaggering, temerarious, thoughtless, unafraid, unchary, undoubting, unfaltering, unhesitating, unwary, unwavering, uppity, vainglorious