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