| presumptive(adjective, circumstantial) | |
| problematic(adjective, clear, certain, shaky, unlikely) | |
| problematical(adjective, clear, certain, ambiguous) | |
| puzzling(obscure, uncertain, vague, unclear, indefinite) | |
| undefined(unknown, unspecified) | |
| unfixed(unknown, unspecified) | |
| unproved | |
| unreasonable | |
| unscientific | |
| ambivalent(adjective, conflicting) | |
| clear as dishwater(expression, obscure, uncertain, vague, unclear) | |
| comparative | |
| contingent(shaky, restricted, unlikely, indirect, incidental) | |
| contradictory | |
| contrary to reason(expression, idiom) | |
| debatable(shaky, unlikely, unpromising) | |
| dicey(shaky, unlikely, unpromising) | |
| disreputable(shaky, unlikely, unpromising) | |
| doubtable(uncertain, doubtful, shaky, unlikely, unpromising) | |
| enigmatical(obscure, uncertain, vague, unclear, indefinite) |
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| APA | Smart Define. (2015). inconclusive thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/inconclusive/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "inconclusive thesaurus" https://smartdefine.org/inconclusive/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, inconclusive thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/inconclusive/thesaurus/synonyms>. |
| MLA | Smart Define. "inconclusive thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/inconclusive/thesaurus/synonyms> |