2
make a stand(expression, idiom, get, oppose, fight)
2
make inquiries(expression, study, request, pursue, ask)
2
make inquiry(verb, expression, check, examine, challenge)
2
measure(verb, see, examine, try, prove)
2
object to(verb, expression, get, oppose, fight)
2
overlook(verb, study, check, consider, correct)
2
pass under review(expression, idiom, judgment)
2
peg(verb, study, check, consider, examine)
2
penetrate(verb, study, check, consider, turn)
2
petition(verb, examine, challenge, seek, search)
2
pierce(verb, study, check, consider, turn)
2
ponder(verb, study, get, check, consider)
2
prod(verb, examine, test, survey, dig)
2
provoke(verb, get, dispute, demand, claim)
2
put through the wringer(verb, expression, idiom, examine, challenge)
2
put to the question(verb, expression, idiom, examine, challenge)
2
put to the test(verb, expression, idiom, study, check)
2
raise question(verb, expression, examine, challenge, seek)
2
rake(verb, check, sound, turn, examine)
2
reason(search, explore)
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APASmart Define. (2016). investigate thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/investigate/thesaurus/synonyms
ChicagoSmart Define. 2016. "investigate thesaurus" https://smartdefine.org/investigate/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, investigate thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/investigate/thesaurus/synonyms>.
MLASmart Define. "investigate thesaurus" 17 February 2016. Web. 27 September 2026. <https://smartdefine.org/investigate/thesaurus/synonyms>