(a.) Excessively sure.

absolute absolutist absolutistic affected arbitrary aristocratic artificial assuming assured audacious authoritarian authoritative autocratic big bloated boastful bold bossy brash brassy brazen bumptious cavalier challenging cheeky clannish cliquish cocksure cocky cold conceited condescending confident contemptuous contumelious convinced cool daring decided defiant defying derisive despotic determined dictatorial disdainful disregardful domineering egotistical exclusive familiar feudal forward greatly daring grinding haughty high and mighty high-and-mighty high-faluting high-flown high-handed high-headed high-nosed highfalutin hoity-toity hubristic imperative imperial imperious impertinent important impudent insolent insulting lofty lordly magisterial magistral mannered masterful monocratic obtrusive oppressive overbearing overconfident overpresumptuous overruling oversure overweening patronizing peremptory persuaded pert poised pompous pontifical positive presuming presumptuous procacious proud puffy purse-proud pushy reassured regardless of consequences repressive saucy scornful secure self-assertive self-assured self-confident self-important self-reliant severe showy sneering sniffy snobbish snobby snooty snotty strict stuck-up stuffy supercilious superior suppressive sure swaggering toploftical toplofty tyrannical tyrannous unafraid undoubting unfaltering unhesitating unwavering uppish uppity upstage vain withering