aggressively self-confident, arrogant, big, biggety, bumptious, chesty, cocky, conceited, condescending, domineering, haughty, high-faluting, high-flown, high-headed, high-nosed, hoity-toity, immodest, know-it-all, lofty, narcissistic, obtrusive, overbearing, overwise, patronizing, peacockish, peacocky, perk, perky, pert, proud, puffed up, purse-proud, self-conceited, self-opinionated, smart-alecky, superior, swelled-headed, toplofty, uppish, uppity, upstage, vainglorious