[ trey-ter ]
See synonyms for: traitortraitors on

  1. a person who betrays another person, a cause, or any trust.

  2. a person who commits treason by betraying their country.

Origin of traitor

First recorded in 1175–1225; Middle English from Old French from Latin trāditōr-, stem of trāditor “betrayer”; see traditor

Other words from traitor

  • trai·tor·ship, noun

Words Nearby traitor Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use traitor in a sentence

British Dictionary definitions for traitor


/ (ˈtreɪtə) /

  1. a person who is guilty of treason or treachery, in betraying friends, country, a cause or trust, etc

Origin of traitor

C13: from Old French traitour, from Latin trāditor traditor

Derived forms of traitor

  • traitorous, adjective
  • traitorously, adverb
  • traitorship, noun
  • traitress, fem n

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