- Definitions|2
- Thesaurus|441
- Abbreviations|0
51 entries under reasonable topic. ×
| irrefutable(adjective, sound, definite, precise) | |
| conclusive(adjective, sound, rational, definite) | |
| valid(adjective, sound, right, rational) | |
| accurate(adjective, set, sound, certain) | |
| binding(adjective, sound, certain, true) | |
| compelling(adjective, sound, rational, definite) | |
| convincing(adjective, sound, certain, definite) | |
| determinative(adjective, sound, rational, definite) | |
| proven(adjective, set, sound, certain) | |
| sound(adjective, certain, true, rational) | |
| telling(adjective, sound, rational, definite) | |
| true(adjective, sound, certain, rational) | |
| attested(adjective, good, sound, right) | |
| authentic(adjective, good, sound, right) | |
| authoritative(adjective, good, sound, right) | |
| bona fide(expression, adjective, good, sound, right) | |
| confirmed(adjective, good, sound, right) | |
| credible(adjective, good, sound, right) | |
| defensible(sound, rational) | |
| efficacious(adjective, good, sound, right) |
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| APA | Smart Define. (2015). unanswerable thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/unanswerable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "unanswerable thesaurus" https://smartdefine.org/unanswerable/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2015, unanswerable thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/unanswerable/thesaurus/synonyms>. |
| MLA | Smart Define. "unanswerable thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/unanswerable/thesaurus/synonyms> |