Cain, Judas, apache, assassin, assassinator, badman, bandit, betrayer, bloodletter, bloodshedder, bravo, bucko, bully, bullyboy, burker, butcher, button man, cannibal, convict, criminal, crook, cutthroat, deceiver, desperate criminal, devil, double-dealer, eradicator, executioner, exterminator, felon, fugitive, gallows bird, gangster, gaolbird, garroter, gorilla, gun, gunman, gunsel, hatchet man, head-hunter, hell-raiser, hellcat, hit man, homicidal maniac, homicide, jailbird, killer, lawbreaker, mad dog, man-eater, man-killer, manslayer, massacrer, matador, mobster, murderer, outlaw, pesticide, poison, poisoner, public enemy, quisling, racketeer, rough, rowdy, ruffian, scofflaw, slaughterer, slayer, strangler, swindler, thief, thug, torpedo, traitor, trigger man, two-timer