74 entries under adjective topic. ×

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penetrating(logical, tentative, systematic, searching)
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pilot(tentative, preliminary, examining, heuristic)
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preliminary(tentative, examining, heuristic)
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probationary(tentative, preliminary, examining, heuristic)
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problem-solving(logical, systematic, indicative)
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provisional(tentative, examining)
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risky
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sceptical
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scrutinizing
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seeking(tentative, exploratory, examining, investigatory)
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sharp(penetrating, tentative, searching, analytical)
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skeptical
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speculative
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tampering
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APASmart Define. (2015). investigative thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/investigative/thesaurus/synonyms
ChicagoSmart Define. 2015. "investigative thesaurus" https://smartdefine.org/investigative/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, investigative thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/investigative/thesaurus/synonyms>.
MLASmart Define. "investigative thesaurus" 14 April 2015. Web. 29 September 2026. <https://smartdefine.org/investigative/thesaurus/synonyms>