thug (n.)

• adherent
• apache
• assassin
• assassinator
• bandit
• battler
• belligerent
• betrayer
• blade
• bravo
• brawler
• brigand
• bully
• bullyboy
• butcher
• cannibal
• combatant
• competitor
• contender
• contestant
• convict
• creature
• criminal
• crook
• cutthroat
• dacoit
• deceiver
• desperado
• devil
• disciple
• disputant
• double-dealer
• duelist
• dummy
• enforcer
• eradicator
• executioner
• exterminator
• felon
• fencer
• fighter
• figurehead
• flunky
• follower
• fugitive
• gamecock
• gangster
• gaolbird
• garroter
• gillie
• gladiator
• goon
• gorilla
• gun
• gunman
• hanger-on
• heavy
• hellcat
• henchman
• homicide
• hood
• hoodlum
• hooligan
• jackal
• jailbird
• killer
• knight
• lackey
• lawbreaker
• man
• man-eater
• manslayer
• matador
• militant
• minion
• mobster
• mugger
• murderer
• myrmidon
• outlaw
• pesticide
• plug-ugly
• poison
• poisoner
• puppet
• quarreler
• quisling
• racketeer
• rioter
• rival
• robber
• rough
• rowdy
• ruffian
• satellite
• scofflaw
• scrapper
• slaughterer
• slayer
• squabbler
• stooge
• strangler
• strong
• strong-armer
• struggler
• swashbuckler
• swindler
• sword
• swordsman
• sycophant
• terrorist
• thief
• tilter
• torpedo
• tough
• traitor
• two-timer
• votary
• wrangler
• yahoo