Synonyms:
- Brutus,
- Judas,
- Judas Iscariot,
- Quisling,
- archtraitor,
- betrayer,
- cockatrice,
- conniver,
- conspirator,
- conspirer,
- double agent,
- double-crosser,
- double-dealer,
- informer,
- intrigant,
- intriguer,
- machinator,
- plotter,
- quisling,
- rat,
- schemer,
- serpent,
- snake,
- timeserver,
- traitor,
- treasonist,
- trimmer,
- turncoat