1
criminal case(expression, idiom)
1
cross-interrogator
1
cross-questioner
1
delator
1
deputy
1
flic
1
foreign agent(noun, expression, plant, agent, operative)
1
government man
1
guard(noun, watch, spy, lookout, patrol)
1
heat(noun, law, person, force, blue)
1
hotel detective
1
house detective
1
house dick
1
inquiry agent
1
inquisitionist
1
inquisitor
1
inside agent(noun, expression, plant, agent, operative)
1
intelligencer(noun, plant, agent, operative, informer)
1
interlocutor
1
interpellator
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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>