| betrayer(noun, spy, informer, rat, turncoat) |
| traitor(noun, person, spy, informer, rat) |
| turncoat(noun, spy, informer, rat, impostor) |
| Judas(noun, spy, informer, impostor, renegade) |
| defector(noun, spy, impostor, renegade, turncoat) |
| double-crosser(noun, spy, informer, rat, impostor) |
| informer(noun, spy, rat, turncoat, traitor) |
| quisling(noun, spy, impostor, renegade, turncoat) |
| impostor(spy, renegade, turncoat, hypocrite, conspirator) |
| intriguer(spy, impostor, renegade, turncoat, hypocrite) |
| miscreant(spy, impostor, renegade, turncoat, hypocrite) |
| rebel(spy, turncoat, conspirator) |
| sneak(spy, impostor, renegade, turncoat, hypocrite) |
| snitcher(spy, impostor, renegade, turncoat, hypocrite) |
| squealer(spy, impostor, renegade, turncoat, hypocrite) |
| traducer(spy, impostor, renegade, turncoat, hypocrite) |
| Arnold |
| backstabber(noun, spy, informer, rat, traitor) |
| deserter(noun, spy, impostor, renegade, turncoat) |
| double agent(noun, expression, spy, turncoat, traitor) |