defector

a person who abandons a cause or organization usually without right the defector demanded political asylum in exchange for information about his nation's spying operations Synonyms apostate, renegade, deserter, recreantRelated Words betrayer, double-crosser, quisling, traitor, traitress (or traitoress), turnabout, turncoat; abandoner, come-outer, dropout, leaver; defier, insurgent, insurrectionary, insurrectionist, mutineer, rebel, red, revolter, revolutionary, revolutionist, revolutionizer; discontent, malcontent; recusant, refusenik (also refusnik), refuserNear Antonyms adherent, disciple, follower, supporter; fanatic, militant, partisan (also partizan), zealotAntonyms loyalist