161 entries under noun topic. ×

36
search(verb, action, study, check)
30
study(verb, check, consider, correct)
21
research(verb, action, study, check)
21
check(verb, study, consider, observe)
19
investigation(study, check, measure, review)
19
reconnaissance(study, search, test, investigate)
17
inquiry(study, check, review, request)
17
survey(verb, study, check, consider)
17
examination(study, check, measure, review)
15
exploration(study, review, question, test)
14
inquest(study, check, review, question)
13
test(verb, study, advance, check)
12
sound(verb, grasp, understand, seize)
12
scrutiny(study, check, measure, review)
10
enquiry
10
experiment(verb, study, check, taste)
10
inspection(study, check, review, conclusion)
10
quest(verb, study, check, determine)
9
question(verb, study, check, consider)
8
plumb(verb, grasp, understand, divine)
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APASmart Define. (2016). probe thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/probe/thesaurus/synonyms
ChicagoSmart Define. 2016. "probe thesaurus" https://smartdefine.org/probe/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, probe thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/probe/thesaurus/synonyms>.
MLASmart Define. "probe thesaurus" 27 March 2016. Web. 25 September 2026. <https://smartdefine.org/probe/thesaurus/synonyms>