27 entries under plant topic. ×

20
investigator(noun, person, investigate, agent)
13
spy(noun, verb, person, information)
10
sleuth(noun, information, watch, investigate)
8
snoop(noun, person, agent, operative)
7
scout(noun, verb, person, watch)
4
agent(noun, shadow, operative, mole)
4
secret agent(noun, expression, idiom, agent)
3
informer(noun, information, agent, operative)
2
emissary(noun, watch, agent, spy)
2
operative(noun, agent, spy, mole)
2
patrol(noun, person, force, bear)
1
foreign agent(noun, expression, agent, operative)
1
inside agent(noun, expression, agent, operative)
1
intelligencer(noun, agent, operative, informer)
1
lookout(noun, watch, guard, agent)
1
mole(noun, watch, agent, spy)
1
observer(noun, watch, guard, agent)
1
picket(noun, watch, guard, agent)
1
secret service(noun, expression, agent, operative)
1
sleeper(noun, agent, operative, informer)
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APASmart Define. (2015). detective thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/detective/thesaurus/synonyms
ChicagoSmart Define. 2015. "detective thesaurus" https://smartdefine.org/detective/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, detective thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/detective/thesaurus/synonyms>.
MLASmart Define. "detective thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/detective/thesaurus/synonyms>