| traitor(noun, person, opposition, trust, agent) |
| rat(noun, person, informal, behavior, trust) |
| informer(noun, opposition, source, agent, villain) |
| double-crosser(noun, person, trust, source, spy) |
| squealer(noun, source, spy, grass, sneak) |
| turncoat(noun, source, spy, sneak, informer) |
| two-timer(noun, spy, turncoat, conspirator) |
| double-dealer |
| snitch(noun, source, spy, grass, sneak) |
| Judas(noun, person, trust, spy, decoy) |
| blabber |
| nark(noun, source, grass, sneak, decoy) |
| renegade(noun, person, rebel, spy, criminal) |
| spy(noun, opposition, source, agent, villain) |
| Benedict Arnold(noun, expression, spy, informer, rat) |
| canary(noun, source, grass, sneak, informer) |
| conspirator(noun, spy, turncoat, knave, plotter) |
| deceiver(noun, source, talent, sneak, informer) |
| deserter(noun, rebel, spy, fugitive, turncoat) |
| fink(noun, source, spy, grass, sneak) |