noun
wretch, villain, knave, rogue, ruffian, rapscallion, scamp, caitiff, sneak, scoundrel, culprit, reprobate, delinquent, bully, malefactor, felon, criminal, convict, outlaw, jailbird, drunkard, bootlegger, blackguard, outcast, scapegrace, scallawag, racketeer, hoodlum, pickpocket, loafer, rounder, rowdy, rough; see also criminal, rascal.
Antonyms gentleman*, lady*, good man.