Bluebeard, Cain, Mafioso, Young Turk, apache, assassin, assassinator, beast, beldam, berserk, berserker, bloodletter, bloodshedder, bomber, bravo, brute, bucko, bully, bullyboy, burker, butcher, button man, cannibal, cutthroat, daisy, demon, desperado, devil, dilly, dragon, eradicator, executioner, exterminator, fiend, fire-eater, firebrand, fury, garroter, goon, gorilla, gun, gunman, gunsel, hardnose, hatchet man, head-hunter, hell-raiser, hellcat, hellhound, hellion, hit man, holy terror, homicidal maniac, homicide, hood, hoodlum, hooligan, hothead, hotspur, humdinger, incendiary, lulu, mad dog, madcap, man-eater, man-killer, manslayer, massacrer, matador, monster, mugger, murderer, pesticide, poison, poisoner, rapist, revolutionary, rough, rowdy, ruffian, savage, she-wolf, slaughterer, slayer, spitfire, strangler, termagant, terror, terrorist, thug, tiger, tigress, torpedo, tough, tough guy, trigger man, ugly customer, violent, virago, vixen, wild beast, witch, wolf