2
emissary(noun, plant, watch, agent, spy)
2
fly cop(expression, idiom)
2
gendarme(noun, law, person, force, blue)
2
inquirer(agent, hound, police, gumshoe, questioner)
2
officer
2
operative(noun, plant, agent, spy, mole)
2
patrol(noun, person, force, plant, bear)
2
police sergeant
2
policewoman(noun, officer)
2
prosecutor(noun, agent, hound, police, gumshoe)
2
reconnoitre
2
superintendent
2
tipstaves
2
treasury agent
1
Sherlock
1
narc(noun, law, person, force, blue)
1
'tec
1
amicus curiae(expression, idiom, information)
1
arm of the law
1
asker
11 years ago|8.1k views|share |citing 
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>