- Definitions|2
- Thesaurus|441
- Abbreviations|0
45 entries under rational topic. ×
| conclusive(adjective, sound, reasonable, definite) | |
| valid(adjective, sound, right, reasonable) | |
| binding(adjective, sound, reasonable, certain, true) | |
| compelling(adjective, sound, reasonable, definite) | |
| determinative(adjective, sound, reasonable, definite) | |
| sound(adjective, reasonable, certain, true) | |
| telling(adjective, sound, reasonable, definite) | |
| true(adjective, sound, reasonable, certain) | |
| attested(adjective, good, sound, right, reasonable) | |
| authentic(adjective, good, sound, right, reasonable) | |
| authoritative(adjective, good, sound, right, reasonable) | |
| confirmed(adjective, good, sound, right, reasonable) | |
| credible(adjective, good, sound, right, reasonable) | |
| defensible(sound, reasonable) | |
| efficacious(adjective, good, sound, right, reasonable) | |
| efficient(adjective, good, sound, right, reasonable) | |
| genuine(adjective, good, sound, right, reasonable) | |
| good(adjective, sound, right, reasonable) | |
| just(adjective, good, sound, right, reasonable) | |
| justifiable(sound, reasonable) |
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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> |