| spotter(noun, plant, agent, operative, informer) | |
| treasonist(spy, turncoat, conspirator) | |
| undercover agent(noun, expression, plant, agent, spy) | |
| conspirator(spy, turncoat) | |
| agent(noun, plant, spy, operative, informer) | |
| apostate(noun, spy, turncoat, conspirator) | |
| archtraitor | |
| backslider(noun, spy, turncoat, conspirator) | |
| cloak-and-dagger operative | |
| cockatrice | |
| conniver | |
| conspirer | |
| counterintelligence agent | |
| defector(noun, spy, turncoat, conspirator) | |
| deserter(noun, spy, turncoat, conspirator) | |
| detective(noun, plant, agent, spy, operative) | |
| double-dealer | |
| emissary(noun, plant, agent, operative, mole) | |
| fifth-columnist | |
| foreign agent(noun, expression, plant, agent, operative) |
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| APA | Smart Define. (2015). double agent thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/double_agent/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "double agent thesaurus" https://smartdefine.org/double_agent/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, double agent thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/double_agent/thesaurus/synonyms>. |
| MLA | Smart Define. "double agent thesaurus" 13 April 2015. Web. 21 September 2026. <https://smartdefine.org/double_agent/thesaurus/synonyms> |