Synonyms and related words :
Herod, blatherskite, bluff, bluffer, blusterer, boldface, braggart, bravo, brazenface, bucko, bully, bullyboy, chutzpanik, fanfaron, hector, hectorer, hussy, malapert, miles gloriosus, minx, peacock, pup, puppy, ranter, raver, roisterer, saucebox, smart aleck, smart-ass, smarty, smarty-pants, strutter, swanker, swash, swashbuckler, swasher, upstart, vaporer, whippersnapper, wise guy, wise-ass