double dealer

/ˈdʌbəlˌdilər/
noun
  1. A person who says one thing but does another, especially in order to trick or cheat others; a deceitful or dishonest person.
    • I thought he was my friend, but he turned out to be a double-dealer who stole my idea.
    • In the spy novel, the double-dealer sold secrets to both sides of the conflict.
    • The politician was exposed as a double-dealer who promised tax cuts but raised taxes instead.
Antonyms
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