mobster

from WordNet (r) 3.0 (2006)

mobster
    n 1: a criminal who is a member of gang [syn: {gangster},
         {mobster}]

from Moby Thesaurus II by Grady Ward, 1.0

44 Moby Thesaurus words for "mobster":
      Judas, bad person, bandit, betrayer, brigand, convict, criminal,
      crook, dacoit, deceiver, delinquent, desperado, desperate criminal,
      double-dealer, evildoer, felon, fugitive, gallows bird, gangster,
      gaolbird, hoodlum, jailbird, lawbreaker, malefactor, malevolent,
      malfeasant, malfeasor, misfeasor, mobsman, outlaw, public enemy,
      quisling, racketeer, scofflaw, sinner, swindler, thief, thug,
      traitor, transgressor, two-timer, villain, worker of ill,
      wrongdoer