[ trey-ter ]
/ ˈtreɪ tər /


a person who betrays another, a cause, or any trust.
a person who commits treason by betraying his or her country.

Nearby words

  1. trainsick,
  2. trainspotterish,
  3. trainspotting,
  4. traipse,
  5. trait,
  6. traitoress,
  7. traitorous,
  8. traitorously,
  9. traitress,
  10. trajan

Origin of traitor

1175–1225; Middle English < Old French < Latin trāditōr-, stem of trāditor betrayer. See traditor

Related formstrai·tor·ship, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for traitor

British Dictionary definitions for traitor


/ (ˈtreɪtə) /


a person who is guilty of treason or treachery, in betraying friends, country, a cause or trust, etc
Derived Formstraitorous, adjectivetraitorously, adverbtraitorship, nountraitress, fem n

Word Origin for traitor

C13: from Old French traitour, from Latin trāditor traditor

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for traitor



c.1200, from Old French traitor (11c.), from Latin traditorem (nominative traditor) "betrayer," literally "one who delivers," from stem of tradere "deliver, surrender" (see tradition). Originally usually with a suggestion of Judas Iscariot.

Online Etymology Dictionary, © 2010 Douglas Harper