scum

dregs

commoners, commons, herd, hoi polloi, masses, millions, mob, multitude, people, plebeians, populace, public, rank and file

bourgeoisie, middle class, working class

barbarian, brute, caveman, Neanderthal, savage

loudmouth, vulgarian

lowlife, miscreant, rascal, rogue, roughneck, scab, scamp, scoundrel, villain, wretch

booby, fool, nincompoop, ninny, nitwit, nut

airhead, birdbrain, blockhead, dolt, dope, dork [slang], goon, half-wit, idiot, imbecile, moron, turkey