| incongruous | |
| insecure(shaky, unlikely, unpromising) | |
| insubstantial | |
| irrational | |
| irresolute | |
| landmark(adjective, circumstantial) | |
| limited(adjective, poor, inadequate, restricted, ineffective) | |
| long shot(expression, shaky, unlikely, unpromising) | |
| loose | |
| misty | |
| muddy(obscure, uncertain, vague, unclear, indefinite) | |
| mysterious | |
| nisi | |
| nonscientific | |
| not proved | |
| occasional(adjective, circumstantial) | |
| on thin ice(expression, idiom, shaky, unlikely, unpromising) | |
| opaque(obscure, uncertain, vague, unclear, indefinite) | |
| paralogical | |
| precarious(shaky, unlikely, unpromising) |
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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> |