The Collaborative International Dictionary of English v.0.48:

Swaggerer \Swag"ger*er\, n.
   One who swaggers; a blusterer; a bully; a boastful, noisy
   fellow. --Shak.
   [1913 Webster]

WordNet (r) 3.0 (2006):

swaggerer
    n 1: someone who walks in an arrogant manner

Moby Thesaurus II by Grady Ward, 1.0:

41 Moby Thesaurus words for "swaggerer":
   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