turncoat

from WordNet (r) 3.0 (2006)
turncoat
    n 1: a disloyal person who betrays or deserts his cause or
         religion or political party or friend etc. [syn:
         {deserter}, {apostate}, {renegade}, {turncoat}, {recreant},
         {ratter}]
from The Collaborative International Dictionary of English v.0.48
Turncoat \Turn"coat`\ (t[^u]rn"k[=o]t`), n.
   One who forsakes his party or his principles; a renegade; an
   apostate; a defector to the enemy.
   [1913 Webster]

         He is a turncoat, he was not true to his profession.
                                                  --Bunyan.
   [1913 Webster]
from Moby Thesaurus II by Grady Ward, 1.0
68 Moby Thesaurus words for "turncoat":
      Benedict Arnold, Brutus, Judas, Judas Iscariot, Judas-like,
      Quisling, Trojan-horse, Vicar of Bray, apostate, archtraitor,
      backslider, betrayer, betraying, bolter, cockatrice,
      collaborationist, collaborator, conniver, conspirator, conspirer,
      convert, defector, deserter, double agent, double-crosser,
      double-crossing, double-dealer, fifth columnist, fifth-column,
      informer, intrigant, intriguer, machinator, mugwump, plotter,
      proselyte, quisling, quislingistic, rat, recidivist, recreant,
      renegade, renegado, renegate, reversionist, runagate, schemer,
      schismatic, seceder, secessionist, separatist, serpent, snake, spy,
      straggler, strikebreaker, tergiversant, tergiversator, timeserver,
      traitor, traitorous, treasonable, treasonist, treasonous, trimmer,
      turnabout, turntail, two-timing
antiflux / dictionary / turncoat
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