136 entries under noun topic. ×

3
watcher(person, plant, watch, guard)
2
bivouac
2
enemy(someone, rival, opponent, competitor)
2
espionage
2
grass(sneak, decoy, informer, informant)
2
lookout(person, plant, watch, guard)
2
patrolman
2
prosecutor(opposition, agent, villain, rebel)
2
sentinel(watch, guard, warning, ward)
2
spies
2
tail(verb, follow, discover, watch)
2
traducer(opposition, agent, villain, rebel)
1
Benedict Arnold(expression, informer, rat, turncoat)
1
adversary(opposition, agent, rebel, criminal)
1
antagonist(opposition, agent, rebel, criminal)
1
archenemy(opposition, agent, villain, rebel)
1
asperser(opposition, agent, villain, rebel)
1
assailant(opposition, agent, villain, rebel)
1
attacker(opposition, agent, villain, rebel)
1
backbiter(opposition, agent, villain, rebel)
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APASmart Define. (2016). spy thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/spy/thesaurus/synonyms
ChicagoSmart Define. 2016. "spy thesaurus" https://smartdefine.org/spy/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2016, spy thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/spy/thesaurus/synonyms>.
MLASmart Define. "spy thesaurus" 10 February 2016. Web. 30 September 2026. <https://smartdefine.org/spy/thesaurus/synonyms>