173 entries under study topic. ×

38
examination(noun, check, measure, review)
33
exploration(noun, check, review, search)
29
research(noun, check, measure, review)
27
scrutiny(noun, check, measure, review)
25
probe(noun, check, measure, review)
24
analysis(noun, change, check, notice)
23
reconnaissance(noun, search, test, investigate)
22
inspection(noun, change, check, notice)
22
inquiry(noun, check, review, division)
21
inquest(noun, check, review, request)
16
search(noun, check, measure, review)
15
inquisition(noun, check, review, test)
13
survey(noun, check, review, class)
13
review(noun, change, check, class)
12
test(noun, check, measure, review)
10
interrogation(noun, test, race, analysis)
8
quest(noun, check, search, test)
8
check(noun, measure, review, struggle)
7
trial(noun, check, measure, review)
7
experiment(noun, check, review, struggle)
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APASmart Define. (2015). investigation thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/investigation/thesaurus/synonyms
ChicagoSmart Define. 2015. "investigation thesaurus" https://smartdefine.org/investigation/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, investigation thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/investigation/thesaurus/synonyms>.
MLASmart Define. "investigation thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/investigation/thesaurus/synonyms>