| constable(noun, agent, spy, informer, reporter) | |
| cop(noun, agent, spy, informer, reporter) | |
| eavesdropper(agent, spy, informer, reporter, gumshoe) | |
| eye(agent, spy, informer, reporter, gumshoe) | |
| fink(agent, spy, informer, reporter, gumshoe) | |
| flatfoot(agent, eye, spy, police, informer) | |
| informer(agent, spy, gumshoe, investigator, dick) | |
| inquiry agent | |
| inspector | |
| investigator | |
| narc | |
| nark(agent, spy, police, informer, reporter) | |
| plainclothes officer(expression, agent, spy, police, informer) | |
| plainclothesman | |
| police officer(expression, agent, spy, informer, reporter) | |
| private dick | |
| prosecutor(agent, spy, police, informer, reporter) | |
| reporter(agent, spy, informer, gumshoe, investigator) | |
| revenuer | |
| roper(agent, spy, police, informer, reporter) |
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Power Thesaurus
| APA | Smart Define. (2015). private investigator thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/private_investigator/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "private investigator thesaurus" https://smartdefine.org/private_investigator/thesaurus/synonyms (accessed September 30, 2026). |
| Harvard | Smart Define 2015, private investigator thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/private_investigator/thesaurus/synonyms>. |
| MLA | Smart Define. "private investigator thesaurus" 14 April 2015. Web. 30 September 2026. <https://smartdefine.org/private_investigator/thesaurus/synonyms> |