27 entries under plant topic. ×

17
detective(noun, person, investigate, agent)
8
sleuth(noun, person, investigate, agent)
4
spy(noun, person, agent, shadow)
3
operative(noun, agent, mole, gumshoe)
3
watcher(noun, person, search, agent)
2
agent(noun, person, shadow, operative)
2
observer(noun, agent, operative, informer)
2
snoop(noun, agent, operative, informer)
1
double agent(noun, expression, agent, operative)
1
emissary(noun, agent, operative, mole)
1
espionage agent(noun, expression, agent, operative)
1
foreign agent(noun, expression, agent, operative)
1
informer(noun, agent, operative, mole)
1
inside agent(noun, expression, agent, operative)
1
intelligencer(noun, agent, operative, informer)
1
lookout(noun, agent, operative, informer)
1
patrol(noun, agent, operative, informer)
1
picket(noun, agent, operative, informer)
1
scout(noun, agent, operative, informer)
1
secret agent(noun, expression, agent, operative)
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APASmart Define. (2015). investigator thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/investigator/thesaurus/synonyms
ChicagoSmart Define. 2015. "investigator thesaurus" https://smartdefine.org/investigator/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2015, investigator thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/investigator/thesaurus/synonyms>.
MLASmart Define. "investigator thesaurus" 17 December 2015. Web. 1 October 2026. <https://smartdefine.org/investigator/thesaurus/synonyms>