American Oxford Thesaurus
defector
defector noun Cuban defectors sought refuge in Miami: deserter, turncoat, traitor, renegade, Judas, quisling; informal rat.
Oxford Thesaurus
defector
defector noun deserter, turncoat, traitor, rebel, renegade, tergiversator, apostate, recreant, Judas, quisling; informal rat.
Sanseido Wisdom Dictionary
defector
de fec tor /dɪféktə r /名詞 C 亡命者 ; 離党者, (ほかの会社 グループなどに )移る人, 移籍者 .