1
interrogator
1
interrogatrix
1
interviewer
1
investigator(noun, plant, agent, operative, mole)
1
lookout(noun, plant, agent, operative, mole)
1
military-intelligence man
1
naval-intelligence man
1
noncooperator(noun, radical, operative)
1
observer(noun, plant, agent, operative, mole)
1
opinion-sampler
1
patrol(noun, plant, agent, operative, mole)
1
picket(noun, plant, agent, operative, mole)
1
poller
1
prober
1
querier
1
querist
1
questioner
1
questionist
1
quizzer
1
reconnoiterer
11 years ago|1.8k views|share |citing 
APASmart Define. (2015). secret agent thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/secret_agent/thesaurus/synonyms
ChicagoSmart Define. 2015. "secret agent thesaurus" https://smartdefine.org/secret_agent/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, secret agent thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/secret_agent/thesaurus/synonyms>.
MLASmart Define. "secret agent thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/secret_agent/thesaurus/synonyms>