2
probe(verb, study, consider, sound, examine)
2
prosecutor(noun, opposition, agent, villain, rebel)
2
ransack(verb, turn, ravage, inquiry)
2
read(verb, study, mark, consider, see)
2
recognise
2
reconnoiterer(watch, guard, lookout, patrol, detective)
2
reporter(agent, sneak, informer, messenger, informant)
2
rummage(verb, search, ransack, inquiry)
2
scope(verb, consider, see, note, regard)
2
scout out(expression, seek, search, hunt)
2
search out(verb, expression, phrasal verb, detect)
2
sentinel(noun, watch, guard, warning, ward)
2
shop
2
snitcher(grass, sneak, decoy, informer, informant)
2
sound
2
spies
2
spy upon(verb, phrasal verb)
2
squealer(grass, sneak, decoy, informer, informant)
2
stalker
2
stoolie(grass, sneak, decoy, informer, informant)
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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>