| fink(noun, source, agent, gossip) |
| informer(noun, source, agent, gossip) |
| Sherlock Holmes(noun, expression, agent, police) |
| agent(noun, informer, reporter, gumshoe) |
| analyst(noun, agent, informer, reporter) |
| bird dog(noun, expression, agent, police) |
| bloodhound(noun, agent, police, informer) |
| bull(noun, agent, informer, reporter) |
| constable(noun, agent, informer, reporter) |
| cop(noun, agent, informer, reporter) |
| dick(noun, agent, police, informer) |
| eavesdropper(noun, agent, informer, reporter) |
| eye(noun, agent, informer, reporter) |
| fed(noun, agent, police, informer) |
| flatfoot(noun, agent, police, informer) |
| gumshoe(noun, agent, informer, reporter) |
| peeper(noun, agent, police, informer) |
| plainclothes officer(noun, expression, agent, police) |
| police officer(noun, expression, agent, informer) |
| private eye(noun, expression, agent, informer) |