2
survey(verb, mark, consider, see, note)
2
tail(noun, verb, follow, discover, watch)
2
tap(verb, study, consider, examine, review)
2
tattler(grass, sneak, decoy, informer, informant)
2
tattletale(grass, sneak, decoy, informer, informant)
2
traducer(noun, opposition, agent, villain, rebel)
2
undercover man
2
whistle-blower(grass, decoy, informer, turncoat, conspirator)
2
wiretap(verb, study, consider, examine, review)
1
Benedict Arnold(noun, expression, informer, rat, turncoat)
1
Sherlock Holmes(expression, agent, hound, police, informer)
1
adversary(noun, opposition, agent, rebel, criminal)
1
advertise(verb, mark, see, respect, note)
1
analyst(agent, hound, police, informer, reporter)
1
antagonist(noun, opposition, agent, rebel, criminal)
1
apprehend(verb, see, observe, notice, remark)
1
archenemy(noun, opposition, agent, villain, rebel)
1
asperser(noun, opposition, agent, villain, rebel)
1
assailant(noun, opposition, agent, villain, rebel)
1
attacker(noun, opposition, agent, villain, rebel)
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APASmart Define. (2016). spy thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/spy/thesaurus/synonyms
ChicagoSmart Define. 2016. "spy thesaurus" https://smartdefine.org/spy/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, spy thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/spy/thesaurus/synonyms>.
MLASmart Define. "spy thesaurus" 10 February 2016. Web. 23 September 2026. <https://smartdefine.org/spy/thesaurus/synonyms>