| betrayer(noun, source, grass, sneak) |
| traitor(noun, person, rascal, scoundrel) |
| sneak(noun, source, gossip, grass) |
| whistle-blower(source, grass, sneak, informer) |
| conspirator(impostor, renegade, turncoat, hypocrite) |
| renegade(impostor, turncoat, hypocrite, knave) |
| Benedict Arnold(expression, impostor, renegade, turncoat) |
| Judas(impostor, renegade, turncoat, hypocrite) |
| apostate(impostor, renegade, turncoat, hypocrite) |
| back-stabber(impostor, renegade, turncoat, hypocrite) |
| backslider(impostor, renegade, turncoat, hypocrite) |
| deceiver(source, sneak, rat, impostor) |
| double-crosser(source, grass, sneak, informer) |
| hypocrite(impostor, renegade, turncoat, conspirator) |
| intriguer(impostor, renegade, turncoat, hypocrite) |
| miscreant(impostor, renegade, turncoat, hypocrite) |
| quisling(impostor, renegade, turncoat, hypocrite) |
| rebel(turncoat, conspirator) |
| snake(sneak, informer, rat, impostor) |
| traducer(impostor, renegade, turncoat, hypocrite) |