140 entries under test topic. ×

8
consider(verb, study, check, observe, resolve)
8
go into(verb, expression, phrasal verb, action, study)
8
go over(verb, expression, phrasal verb, study, check)
8
look over(verb, expression, phrasal verb, study, check)
8
peruse(verb, study, check, consider, observe)
7
dig(verb, action, study, check, consider)
7
interrogate(verb, study, check, consider, observe)
7
try(verb, study, get, check, consider)
6
assay(verb, study, check, consider, taste)
6
experiment(verb, study, check, taste, examine)
6
quiz(verb, study, check, correct, examine)
6
sound(verb, examine, seize, survey)
5
look at(verb, expression, phrasal verb, study, check)
5
case(verb, study, check, consider, correct)
5
check up(verb, expression, phrasal verb, study, check)
5
dig into(verb, expression, study, check, separate)
5
query(verb, get, dispute, provoke, examine)
5
read(verb, study, check, consider, observe)
5
reconnoiter(verb, study, check, consider, observe)
5
verify(verb, check, correct, examine, review)
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APASmart Define. (2016). investigate thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/investigate/thesaurus/synonyms
ChicagoSmart Define. 2016. "investigate thesaurus" https://smartdefine.org/investigate/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, investigate thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/investigate/thesaurus/synonyms>.
MLASmart Define. "investigate thesaurus" 17 February 2016. Web. 26 September 2026. <https://smartdefine.org/investigate/thesaurus/synonyms>