Synonyms: double-crosser, double-dealer, betrayer, two-timer, traitor
Definition: a person who says one thing and does another
Similar words: deceiver, beguiler, trickster, cheat, cheater, slicker
Definition: someone who leads you to believe something that is not true
Synonyms: squealer, informer, betrayer, blabber, rat
Definition: one who reveals confidential information in return for money