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