58 entries under expression topic. ×

1
keep under surveillance(verb, idiom, examine, case)
1
look for(verb, phrasal verb, examine, case)
1
nosey parker(gossip, nuisance, ferret, nosy)
1
plainclothes officer(agent, spy, informer, reporter)
1
poke around(verb, phrasal verb)
1
police officer(agent, spy, informer, reporter)
1
secret service(noun, plant, agent, operative)
1
secretly follow(verb, examine, case, discover)
1
set eyes on(verb, idiom, examine, discover)
1
sidewalk superintendent(gossip, nuisance, ferret, nosy)
1
stake out(verb, examine, case, discover)
1
take in(verb, examine, discover, look)
1
take note(verb, idiom, examine, case)
1
tune in on(idiom, bug, poke, tap)
1
undercover agent(noun, plant, agent, spy)
0
bend an ear(idiom, bug, spy, monitor)
0
day tripper(ferret, vacationist, day-tripper)
0
eagle eye(verb, look, scan, scrutinize)
0
ears into(bug, spy, monitor, eavesdrop)
0
ferret around(verb, phrasal verb)
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APASmart Define. (2015). snoop thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/snoop/thesaurus/synonyms
ChicagoSmart Define. 2015. "snoop thesaurus" https://smartdefine.org/snoop/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, snoop thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/snoop/thesaurus/synonyms>.
MLASmart Define. "snoop thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/snoop/thesaurus/synonyms>