| snitch(noun, verb, phrasal verb, law, knowledge) |
| sneak(noun, immoral, source, spy, informer) |
| stool pigeon(noun, expression, idiom, law, knowledge) |
| informer(noun, law, person, knowledge, agent) |
| squealer(noun, law, knowledge, slang, source) |
| canary(noun, source, gossip, disclosure, grass) |
| stoolie(noun, law, knowledge, slang, source) |
| nark(noun, source, agent, spy, gossip) |
| snitcher(noun, law, knowledge, slang, source) |
| snake(noun, informal, spy, sneak, informer) |
| tattler(noun, law, person, knowledge, source) |
| tipster(noun, law, knowledge, informal, source) |
| betrayer(noun, source, spy, grass, sneak) |
| informant(noun, law, person, knowledge, source) |
| whistle-blower(noun, source, spy, sneak, informer) |
| narc(noun, source, grass, sneak, decoy) |
| blabbermouth(noun, source, gossip, grass, sneak) |
| ratfink(noun, gossip, sneak, informer) |
| traitor(noun, person, spy, informer, rascal) |
| Benedict Arnold(noun, expression, spy, informer) |