Mafioso, Tartar, Young Turk, bear, beast, beldam, berserk, berserker, bomber, bruiser, brute, crank, crosspatch, demon, devil, dragon, feist, fiend, fire-eater, firebrand, fury, goon, gorilla, grizzly bear, grouch, gun, gunsel, hardnose, hatchet man, hell-raiser, hellcat, hellhound, hellion, holy terror, hood, hoodlum, hooligan, hothead, hotspur, incendiary, killer, mad dog, madcap, monster, mug, mugger, muscle man, plug-ugly, rapist, revolutionary, rodman, roughneck, savage, she-wolf, sorehead, spitfire, strong-arm man, termagant, terror, terrorist, tiger, tigress, torpedo, tough, tough guy, trigger man, violent, virago, vixen, wild beast, witch, wolf