| keen(penetrating, searching, analytical) | |
| laboratory | |
| lineament | |
| logical | |
| manhunt | |
| meddling(adjective, curious) | |
| mention | |
| momentary | |
| nit-picking | |
| notional | |
| observant(penetrating, searching, analytical) | |
| obstructive | |
| on approval | |
| pantomimic | |
| peeping(adjective, curious) | |
| penetrating(adjective, logical, tentative, systematic, searching) | |
| perceptive(logical, penetrating, systematic, searching, analytical) | |
| perspicacious(penetrating, searching, analytical) | |
| piercing(penetrating, searching, analytical) | |
| pilot(adjective, tentative, preliminary, examining, heuristic) |
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| APA | Smart Define. (2015). investigative thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/investigative/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "investigative thesaurus" https://smartdefine.org/investigative/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2015, investigative thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/investigative/thesaurus/synonyms>. |
| MLA | Smart Define. "investigative thesaurus" 14 April 2015. Web. 29 September 2026. <https://smartdefine.org/investigative/thesaurus/synonyms> |