151 entries under investigate topic. ×

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vet(verb, study, check, consider, observe)
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anatomize(verb, study, examine, scrutinize)
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break up(verb, expression, study, examine)
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bring to the test(verb, idiom, subject)
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cut up(verb, expression, study, examine)
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decompose(verb, study, examine, scrutinize)
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decompound(verb, study, examine, scrutinize)
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delve
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diagnose(verb, examine, try)
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dig(penetrate, explore, research, poke)
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disintegrate(verb, study, examine, scrutinize)
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dissect(verb, study, examine, scrutinize)
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dissolve(verb, study, examine, scrutinize)
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divide(verb, study, examine, scrutinize)
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electrolyze(verb, study, examine, scrutinize)
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fool with(expression, examine, try)
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futz around(expression, examine, try)
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give the third degree(verb, expression, idiom, request, question)
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hit(verb, request, question, survey)
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hydrolyze(verb, study, examine, scrutinize)
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APASmart Define. (2016). test thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/test/thesaurus/synonyms
ChicagoSmart Define. 2016. "test thesaurus" https://smartdefine.org/test/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, test thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/test/thesaurus/synonyms>.
MLASmart Define. "test thesaurus" 1 April 2016. Web. 27 September 2026. <https://smartdefine.org/test/thesaurus/synonyms>