211 entries under search topic. ×

4
spy(verb, study, check, consider, sound)
4
catechize(verb, study, check, observe, examine)
4
check over(verb, expression, phrasal verb, study, check)
4
cross-examine(verb, examine, challenge, demand, request)
4
observe(verb, study, check, determine, follow)
4
prospect(verb, action, study, check, separate)
4
search for(verb, expression, phrasal verb, follow, examine)
4
winnow(verb, study, check, separate, consider)
3
challenge(verb, oppose, fight, dispute, examine)
3
audit(verb, study, check, consider, correct)
3
grill(verb, check, examine, challenge, demand)
3
peer(verb, seize, bug, hunt)
3
pore over(verb, expression, study, check, separate)
3
pump(verb, check, examine, challenge, demand)
3
quest(verb, check, follow, examine, challenge)
3
rummage(verb, action, check, sound, examine)
3
scour(verb, study, check, sound, examine)
3
size up(verb, expression, study, check, consider)
3
trace(verb, examine, look, seek)
3
traverse
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APASmart Define. (2016). investigate thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/investigate/thesaurus/synonyms
ChicagoSmart Define. 2016. "investigate thesaurus" https://smartdefine.org/investigate/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2016, investigate thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/investigate/thesaurus/synonyms>.
MLASmart Define. "investigate thesaurus" 17 February 2016. Web. 30 September 2026. <https://smartdefine.org/investigate/thesaurus/synonyms>