jailbird (n.)

• betrayer
• captive
• con
• convict
• criminal
• crook
• deceiver
• desperado
• double-dealer
• felon
• fugitive
• gangster
• gaolbird
• internee
• lag
• lawbreaker
• lifer
• loser
• mobster
• outlaw
• parolee
• prisoner
• quisling
• racketeer
• scofflaw
• swindler
• thief
• thug
• traitor
• trusty
• two-timer