grandiose

colossal, monstrous, prodigious, stupendous, tremendous

kingly, lordly, princely, queenly

awesome, awful, cosmic (also cosmical), sublime, wondrous

formidable, impressive, prepossessing, redoubtable

apocalyptic (also apocalyptical), inflated, operatic, overblown, pompous

marvelous (or marvellous), superb, terrific, wonderful

extravagant, lavish, luxurious, opulent, palatial, palatine, sumptuous

gorgeous, resplendent, splendiferous

extraordinary, killer, remarkable, sensational, striking

celestial, divine, heavenly

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

arrogant, bumptious, complacent, conceited, egoistic (also egoistical), egotistic (or egotistical), high-and-mighty, high-handed, high-hat, hoity-toity, 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

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