1. (a.) Unduly confident; arrogant; presumptuous; conceited.

2. (n.) Conceit; arrogance.

a bit much abandoned arrogant assuming assured audacious boundless brash brazen brazenfaced bumptious cocksure cold complacent confident consequential contumelious convinced cool decided determined disdainful egregious enormous exaggerated excessive exorbitant extravagant extreme fabulous familiar fancy forward gigantic gluttonous high hubristic hyperbolic hypertrophied immoderate improvident imprudent impudent incautious incontinent indiscreet injudicious inordinate insolent insulting intemperate monstrous narcissan narcissine narcissistic narcistic obtrusive out of bounds out of sight outrageous overbig overbold overcareless overconfident overdeveloped overgreat overgrown overlarge overmuch overpresumptuous overproud oversure persuaded poised pompous positive presuming presumptuous procacious proud pushful pushy rash reassured secure self-admiring self-appointed self-approving self-asserting self-assertive self-assuming self-assured self-complacent self-confident self-congratulating self-congratulatory self-content self-contented self-delighting self-elect self-endeared self-esteeming self-gratulating self-gratulatory self-important self-loving self-reliant self-respecting self-satisfied self-sufficient smug steep stiff sure temerarious too much unafraid unbridled unchary unconscionable undoubting undue unfaltering unhesitating unreasonable unrestrained unwary unwavering uppish uppity vain vainglorious would-be