40 entries under agent topic. ×

17
detective(noun, person, plant, investigate)
12
analyst(noun, person, search, first)
11
examiner(noun, person, search, first)
10
inquisitor(noun, person, investigate, ask)
10
researcher(noun, person, investigate, ask)
9
gumshoe(noun, person, slang, investigate)
8
sleuth(noun, person, plant, investigate)
6
inquirer(noun, person, investigate, ask)
6
private detective(noun, expression, idiom, person)
4
spy(noun, person, plant, shadow)
4
tester(noun, person, hound, monitor)
3
operative(noun, plant, mole, gumshoe)
3
prober(noun, person, investigate, ask)
3
quester(noun, person, investigate, ask)
3
watcher(noun, person, plant, search)
2
observer(noun, plant, operative, informer)
2
snoop(noun, plant, operative, informer)
1
double agent(noun, expression, plant, operative)
1
emissary(noun, plant, operative, mole)
1
espionage agent(noun, expression, plant, operative)
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APASmart Define. (2015). investigator thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/investigator/thesaurus/synonyms
ChicagoSmart Define. 2015. "investigator thesaurus" https://smartdefine.org/investigator/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, investigator thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/investigator/thesaurus/synonyms>.
MLASmart Define. "investigator thesaurus" 17 December 2015. Web. 28 September 2026. <https://smartdefine.org/investigator/thesaurus/synonyms>