76 entries under agent topic. ×

12
sleuth(noun, verb, person, information, follow)
11
snoop(noun, verb, person, follow, plant)
11
scout(noun, verb, study, person, consider)
8
informer(noun, person, information, plant, opposition)
7
investigator(noun, person, plant, shadow)
5
betrayer(noun, opposition, source, villain)
4
eavesdropper(noun, information, sneak, informer)
4
traitor(noun, person, opposition, villain)
3
assassin(noun, opposition, villain, rebel)
3
eye(noun, verb, consider, see, respect)
3
shadow(noun, verb, follow, discover, watch)
2
fink(grass, sneak, decoy, informer)
2
prosecutor(noun, opposition, villain, rebel)
2
reporter(sneak, informer, messenger, informant)
2
tail(noun, verb, follow, discover, watch)
2
traducer(noun, opposition, villain, rebel)
1
Sherlock Holmes(expression, hound, police, informer)
1
adversary(noun, opposition, rebel, criminal)
1
analyst(hound, police, informer, reporter)
1
antagonist(noun, opposition, rebel, criminal)
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APASmart Define. (2016). spy thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/spy/thesaurus/synonyms
ChicagoSmart Define. 2016. "spy thesaurus" https://smartdefine.org/spy/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, spy thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/spy/thesaurus/synonyms>.
MLASmart Define. "spy thesaurus" 10 February 2016. Web. 22 September 2026. <https://smartdefine.org/spy/thesaurus/synonyms>