140 entries under test topic. ×
| ask(verb, examine, request, question) | |
| ascertain(verb, study, get, determine, correct) | |
| catechize(verb, study, check, observe, examine) | |
| check over(verb, expression, phrasal verb, study, check) | |
| cross-examine(verb, examine, challenge, demand, request) | |
| prospect(verb, action, study, check, separate) | |
| prove(verb, study, check, consider, see) | |
| winnow(verb, study, check, separate, consider) | |
| challenge(verb, oppose, fight, dispute, examine) | |
| appraise(verb, study, get, check, consider) | |
| audit(verb, study, check, consider, correct) | |
| frisk(verb, study, check, consider, correct) | |
| grill(verb, check, examine, challenge, demand) | |
| note(verb, study, determine, correct, follow) | |
| pore over(verb, expression, study, check, separate) | |
| pump(verb, check, examine, challenge, demand) | |
| quest(verb, check, follow, examine, challenge) | |
| size up(verb, expression, study, check, consider) | |
| give the third degree(verb, expression, idiom, check, examine) | |
| hit(verb, examine, challenge, demand, request) |
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| APA | Smart Define. (2016). investigate thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/investigate/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "investigate thesaurus" https://smartdefine.org/investigate/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2016, investigate thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/investigate/thesaurus/synonyms>. |
| MLA | Smart Define. "investigate thesaurus" 17 February 2016. Web. 27 September 2026. <https://smartdefine.org/investigate/thesaurus/synonyms> |