1
reeve
1
research worker(expression, idiom)
1
researcher(noun, agent, hound, police, gumshoe)
1
revenuer
1
reviewer(agent, hound, monitor, manager, police)
1
roundsman
1
runner(noun, watch, guard, spy, lookout)
1
sampler
1
secret service(noun, expression, plant, agent, operative)
1
shadow(noun, informal, investigator)
1
sheriff
1
sleeper(noun, plant, agent, operative, informer)
1
sleuthhound
1
spook(noun, plant, agent, operative, informer)
1
spotter(noun, plant, watch, guard, agent)
1
store detective
1
tester(agent, hound, monitor, manager, police)
1
tipstaff
1
undercover agent(noun, expression, plant, watch, agent)
1
watch(guard, spy, lookout, custodian, warden)
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APASmart Define. (2015). detective thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/detective/thesaurus/synonyms
ChicagoSmart Define. 2015. "detective thesaurus" https://smartdefine.org/detective/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, detective thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/detective/thesaurus/synonyms>.
MLASmart Define. "detective thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/detective/thesaurus/synonyms>