| sneak(noun, source, spy, grass, informer) |
| snitch(noun, law, knowledge, slang, source) |
| stool pigeon(noun, expression, law, knowledge, slang) |
| tattletale(noun, law, person, knowledge, source) |
| canary(noun, source, gossip, grass, sneak) |
| fink(noun, law, knowledge, slang, source) |
| informer(noun, law, person, knowledge, source) |
| stoolie(noun, law, knowledge, slang, source) |
| squealer(noun, law, knowledge, slang, source) |
| betrayer(noun, source, spy, grass, sneak) |
| tattler(noun, law, person, knowledge, source) |
| blabbermouth(noun, source, gossip, grass, sneak) |
| informant(noun, law, person, knowledge, source) |
| whistle-blower(source, spy, grass, sneak, informer) |
| deceiver(noun, source, spy, sneak) |
| source(noun, grass, sneak, decoy, informer) |
| tipster(noun, law, knowledge, informal, source) |
| deep throat(noun, expression, source, grass, sneak) |
| double-crosser(noun, source, spy, grass, sneak) |
| fat mouth(expression, gossip, sneak, informer) |