betrayer

From betray +‎ -er.

• Rhymes: -eɪə(ɹ)

 

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betrayer

Wikipedia

betrayer (plural betrayers)

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

   Synonyms: backstabber, double-crosser, rat, traitor, two-timer

   Antonym: betrayee

• rebetray, teaberry