This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. Someone who betrays, or reveals confidential information; a squealer or informer.

n. A double-crosser.

n. One who, or that which, betrays.

n. One who betrays; a traitor; a seducer.

n. a person who says one thing and does another

n. one who reveals confidential information in return for money

"_ I have not acquired that sort of good breeding, sir, which isn't founded on good sense; -- and when I call the betrayer of female innocence a bad character, the term, I think, is too true to be abusive."

traitor   

Simon    Judas   

adulterer    supplanter    slanderer    parricide    blasphemer    timeserver    whiner    poltroon    calumniator    cheaters