desperado (n.)

• apache
• assassin
• assassinator
• bandit
• betrayer
• bravo
• bully
• bullyboy
• butcher
• cannibal
• convict
• criminal
• crook
• cutthroat
• deceiver
• devil
• double-dealer
• eradicator
• executioner
• exterminator
• felon
• fugitive
• gangster
• gaolbird
• garroter
• gorilla
• gun
• gunman
• hellcat
• homicide
• jailbird
• killer
• lawbreaker
• man-eater
• manslayer
• matador
• mobster
• murderer
• outlaw
• pesticide
• poison
• poisoner
• quisling
• racketeer
• rough
• rowdy
• ruffian
• scofflaw
• slaughterer
• slayer
• strangler
• swindler
• thief
• thug
• torpedo
• traitor
• two-timer