33 entries under noun topic. ×

1
scout(plant, watch, agent, spy)
1
secret service(expression, plant, agent, operative)
1
sleeper(plant, agent, spy, operative)
1
sleuth(plant, watch, agent, spy)
1
snoop(plant, agent, spy, operative)
1
spook(plant, agent, operative, informer)
1
spotter(plant, watch, agent, spy)
1
watcher(plant, agent, operative, informer)
0
CIA agent
0
CIA man
0
CIA woman
0
fifth-columnist
0
infiltrator(plant, spy, mole, detective)
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APASmart Define. (2015). undercover agent thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/undercover_agent/thesaurus/synonyms
ChicagoSmart Define. 2015. "undercover agent thesaurus" https://smartdefine.org/undercover_agent/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, undercover agent thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/undercover_agent/thesaurus/synonyms>.
MLASmart Define. "undercover agent thesaurus" 10 April 2015. Web. 29 September 2026. <https://smartdefine.org/undercover_agent/thesaurus/synonyms>