hoity-toity

arrogant, bumptious, complacent, conceited, egoistic (also egoistical), egotistic (or egotistical), high-and-mighty, high-handed, high-hat, imperious, important, overweening, presumptuous, prideful, proud, self-asserting, self-assertive, self-centered, self-complacent, self-conceited, self-important, self-obsessed, self-pleased, self-satisfied, smug, uppity, vain, vainglorious

affected, grandiose, highfalutin (also hifalutin), high-minded, la-di-da (also la-de-da), ostentatious, pompous, pretentious, snippy

airy, grandiloquent, high-flown, high-sounding, high-toned, sententious

self-aggrandizing, self-dramatizing, self-glorifying, self-promoting

cavalier, disdainful, haughty, lordly, snobbish, snobby, stuck-up, supercilious, superior

confident, self-assured, self-confident, sure

boastful, braggart, bragging

aggressive, assertive, audacious, bold, brassy, cheeky, cocky, forward, impudent, insolent, rude

flamboyant, flashy, flaunting, garish, gaudy, glitzy, showy, splashy