bastards, beasts, bleeders(British), blighters(chiefly British), boors, bounders, buggers, buzzards, chuffs, churls, clowns, creeps, cretins, cruds(slang), crumbs(slang), curs, dirtbags(slang), dogs, finks, heels, hounds, jerks, jokers, louses, louts, pills, rat finks, rats, reptiles, rotters, schmucks(slang), scumbags(slang), scums, scuzzballs(slang), skunks(also skunk), sleazebags(slang), sleazeballs(slang), sleazes, slimeballs(slang), slimes, slobs, snakes, so-and-sos(or so-and-so's), sods(chiefly British), stinkards, stinkers, swine, toads, varmints, vermin

barbarians, brutes, cavemen, Neanderthals, savagesloudmouths, vulgarianslowlifes(also lowlives), miscreants, rascals, rogues, roughnecks, scabs, scamps, scoundrels, villains, wretchesboobies, doofuses(also dufuses, slang), fools, jackasses, nincompoops, ninnies, nits(chiefly British), nitwits, nuts, schmoes(slang)airheads, birdbrains, blockheads, dinks(slang), dolts, dopes, dorks(slang), goons, half-wits, idiots, imbeciles, morons, turkeysbrats, insolents, nuisances, pests, snipssnobs, snoots, snotsdweebs(slang), nerds

sons of guns