| secret agent | |
| witness | |
| investigate | |
| monitor | |
| spectator | |
| viewer | |
| intelligence officer | |
| activity | |
| informer | |
| inquire | |
| person(noun, adjective) | |
| rat(feature, person, information, individual, squealer) | |
| snoop | |
| stool pigeon | |
| supervise | |
| watcher | |
| intelligence agent | |
| survey | |
| view(noun, verb) | |
| wiretap |
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Power Thesaurus
| APA | Smart Define. (2016). spy thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/spy/thesaurus/broader |
| Chicago | Smart Define. 2016. "spy thesaurus" https://smartdefine.org/spy/thesaurus/broader (accessed September 21, 2026). |
| Harvard | Smart Define 2016, spy thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/spy/thesaurus/broader>. |
| MLA | Smart Define. "spy thesaurus" 10 February 2016. Web. 21 September 2026. <https://smartdefine.org/spy/thesaurus/broader> |