27 entries under plant topic. ×
| sleeper(noun, agent, spy, operative) | |
| sleuth(noun, watch, agent, spy) | |
| snoop(noun, agent, spy, operative) | |
| spook(noun, agent, operative, informer) | |
| spotter(noun, watch, agent, spy) | |
| watcher(noun, agent, operative, informer) | |
| infiltrator(noun, spy, mole, detective) |
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| APA | Smart Define. (2015). undercover agent thesaurus. Retrieved September 28, 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 28, 2026). |
| Harvard | Smart Define 2015, undercover agent thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/undercover_agent/thesaurus/synonyms>. |
| MLA | Smart Define. "undercover agent thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/undercover_agent/thesaurus/synonyms> |