noun
1. someone who deceives a lover or spouse by carrying on a sexual relationship with somebody else
2. a person who says one thing and does another
• Syn: ↑double-crosser, ↑double-dealer, ↑betrayer, ↑traitor
• Derivationally related forms: ↑betray (for: ↑betrayer), ↑double cross (for: ↑double-crosser)
• Hyponyms: ↑Judas
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Useful english dictionary. 2012.