68 entries under noun topic. ×

3
beagle
3
bloodhound(agent, spy, informer, reporter)
3
cop(agent, spy, informer, reporter)
3
ferret
3
informer(information, plant, agent, spy)
3
snooper(agent, spy, hound, sneak)
2
hound
2
shadow(verb, examine, case, discover)
2
spotter(plant, watch, guard, agent)
1
Sherlock
1
constable(agent, spy, informer, reporter)
1
double agent(expression, plant, agent, spy)
1
emissary(plant, watch, agent, spy)
1
espionage agent(expression, plant, agent, operative)
1
espy
1
flatfoot(agent, spy, informer, reporter)
1
foreign agent(expression, plant, agent, operative)
1
inside agent(expression, plant, agent, operative)
1
inspector
1
intelligencer(plant, agent, operative, informer)
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APASmart Define. (2015). sleuth thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/sleuth/thesaurus/synonyms
ChicagoSmart Define. 2015. "sleuth thesaurus" https://smartdefine.org/sleuth/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, sleuth thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/sleuth/thesaurus/synonyms>.
MLASmart Define. "sleuth thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/sleuth/thesaurus/synonyms>