33 entries under noun topic. ×
| scout(plant, watch, agent, spy) | |
| secret service(expression, plant, agent, operative) | |
| sleeper(plant, agent, spy, operative) | |
| sleuth(plant, watch, agent, spy) | |
| snoop(plant, agent, spy, operative) | |
| spook(plant, agent, operative, informer) | |
| spotter(plant, watch, agent, spy) | |
| watcher(plant, agent, operative, informer) | |
| CIA agent | |
| CIA man | |
| CIA woman | |
| fifth-columnist | |
| infiltrator(plant, spy, mole, detective) |
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| APA | Smart Define. (2015). undercover agent thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/undercover_agent/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "undercover agent thesaurus" https://smartdefine.org/undercover_agent/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2015, undercover agent thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/undercover_agent/thesaurus/synonyms>. |
| MLA | Smart Define. "undercover agent thesaurus" 10 April 2015. Web. 29 September 2026. <https://smartdefine.org/undercover_agent/thesaurus/synonyms> |