Noun traitor has 2 senses
  1. traitor, treasonist - someone who betrays his country by committing treason
    --1 is a kind of criminal, felon, crook, outlaw, malefactor
    --1 has particulars:
     collaborator, collaborationist, quisling; fifth columnist, saboteur; traitress; Arnold, Benedict Arnold
  2. double-crosser, double-dealer, two-timer, betrayer, traitor - a person who says one thing and does another
    --2 is a kind of deceiver, cheat, cheater, trickster, beguiler, slicker
    --2 has particulars: Judas