32 entries under expression topic. ×

8
private eye(noun, agent, spy, informer)
7
private detective(noun, idiom, private, detective)
4
private investigator(noun, agent, spy, informer)
1
Sherlock Holmes(agent, spy, informer, gumshoe)
1
bird dog(agent, spy, informer, reporter)
1
catch sight of(verb, idiom, examine, case)
1
double agent(noun, plant, agent, spy)
1
espionage agent(noun, plant, agent, operative)
1
fish out(verb, examine, case, discover)
1
foreign agent(noun, plant, agent, operative)
1
get a load of(verb, idiom, examine, discover)
1
inside agent(noun, plant, agent, operative)
1
keep under surveillance(verb, idiom, examine, case)
1
look for(verb, examine, case, discover)
1
plainclothes officer(agent, spy, hound, informer)
1
police officer(noun, agent, spy, informer)
1
secret agent(noun, plant, agent, operative)
1
secret service(noun, plant, agent, operative)
1
secretly follow(verb, examine, case, discover)
1
set eyes on(verb, idiom, examine, discover)
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APASmart Define. (2015). sleuth thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/sleuth/thesaurus/synonyms
ChicagoSmart Define. 2015. "sleuth thesaurus" https://smartdefine.org/sleuth/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, sleuth thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/sleuth/thesaurus/synonyms>.
MLASmart Define. "sleuth thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/sleuth/thesaurus/synonyms>