lowlife

lowlife
    n 1: a person who is deemed to be despicable or contemptible;
         "only a rotter would do that"; "kill the rat"; "throw the
         bum out"; "you cowardly little pukes!"; "the British call a
         contemptible person a `git'" [syn: {rotter}, {dirty dog},
         {rat}, {skunk}, {stinker}, {stinkpot}, {bum}, {puke},
         {crumb}, {lowlife}, {scum bag}, {so-and-so}, {git}]
    

50 Moby Thesaurus words for "lowlife":
      Bowery bum, bastard, beachcomber, beggar, beggarly fellow,
      blackguard, blighter, budmash, bum, bummer, caitiff, derelict,
      devil, drifter, drunkard, good-for-naught, good-for-nothing, heel,
      hobo, human wreck, knave, mauvais sujet, mean wretch, miscreant,
      mucker, no-good, pauvre diable, pilgarlic, poor creature,
      poor devil, rascal, rogue, sad case, sad sack, scoundrel,
      skid-row bum, stiff, sundowner, swagman, tramp, truant, vag,
      vagabond, vagrant, vaurien, villain, wastrel, worm,
      worthless fellow, wretch