English Dictionary

Pioneers in dictionary publishing since 1819

traitor (ˈtreɪtə



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

Derived Forms

ˈtraitorous  adjective
ˈtraitorously  adverb
ˈtraitorˌship  noun
ˈtraitress  feminine noun

Word Origin

C13: from Old French traitour, from Latin trāditor traditor


View thesaurus entry
= betrayer, deserter, turncoat, deceiver, informer, renegade, defector, Judas, double-crosser (informal), quisling, apostate, miscreant, fifth columnist, snake in the grass (informal), back-stabber, fizgig (Australian) (slang)

Translations for 'traitor'

  • British English: traitor A traitor is someone who harms a group that they belong to by helping its enemies. NOUNSome say he's a traitor to the movement.
  • Brazilian Portuguese: traidor traidora
  • Chinese: 背叛者
  • European Spanish: traidor traidora
  • French: traître
  • German: Verräter Verräterin
  • Italian: traditore traditrice
  • Japanese: 裏切り者
  • Korean: 배신자
  • Portuguese: traidor traidora
  • Spanish: traidor traidora

Example Sentences Including 'traitor'

The only evidence came from the remarks of a self-confessed and now executed traitor in a pretty wild letter.
Townsend, Eileen In Love and War
I knew she couldn't, yet the little traitor voice in my head kept saying, `You don't know that.
Val McDermid KICK BACK (2002)
Hell, I may not be much of a patriot but at least I'm not a traitor.
MacNeill, Alastair The Devil's Door


Log in to comment on this word.