betrayer

1. One who reveals confidential information in return for money (synset 110225792)
   is a type of: informant, source - a person who supplies information
   subtypes:

   • canary, fink, sneak, sneaker, snitch, snitcher, stool pigeon, stoolie, stoolpigeon - someone acting as an informer or decoy for the police
   • copper's nark, nark - an informer or spy working for the police
   • grass, supergrass - a police informer who implicates many people
   same as: blabber, informer, rat, squealer
2. A person who says one thing and does another (synset 110047315)
   is a type of: beguiler, cheat, cheater, deceiver, slicker, trickster - someone who leads you to believe something that is not true
   subtypes: judas - someone who betrays under the guise of friendship
   same as: double-crosser, double-dealer, traitor, two-timer

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