SYNONYMS
criminal, lawbreaker, outlaw, offender, felon, convict, jailbird, malefactor, wrongdoer, black hat, supervillain
transgressor, sinner
gangster, gunman, bandit, brigand, desperado, thief, robber, mugger, swindler, fraudster, racketeer, terrorist, pirate
rogue, scoundrel, wretch, heel, reprobate, charlatan, evil-doer, ruffian, hoodlum, hooligan, thug, delinquent, ne'er-do-well, good-for-nothing
informal crook, con, baddie, shark, rat, snake, snake in the grass, dog, hound, louse, swine, scumbag, wrong 'un
British informal crim
British informal, dated rotter, bounder, bad egg, stinker
Law malfeasant, misfeasor, infractor
dated cad, knave, rake
archaic miscreant, blackguard