81 entries under rational topic. ×
| pure(adjective, good, sound, right, reasonable) | |
| right(sound, reasonable) | |
| stringent(adjective, good, strong, sound, reasonable) | |
| subtle(clear, sound, reasonable, sensible) | |
| true(sound, reasonable, honest, straight) | |
| well-organized(clear, sound, reasonable, sensible) | |
| attested(sound, reasonable) | |
| bona fide(expression, sound, reasonable, honest) | |
| commonsense(sound, reasonable) | |
| confirmed(sound, reasonable) | |
| defensible(sound, reasonable) | |
| methodical(logical, coherent, systematic, investigative) | |
| official(sound, reasonable, valid, lawful) | |
| original(sound, reasonable, significant, weighty) | |
| proven(sound, reasonable) | |
| reasoned(logical, coherent, systematic, investigative) | |
| tested(sound, reasonable) | |
| thought through(expression, coherent) | |
| unadulterated(adjective, good, sound, right, reasonable) | |
| uncorrupted(sound, reasonable) |
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| APA | Smart Define. (2016). cogent thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/cogent/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "cogent thesaurus" https://smartdefine.org/cogent/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, cogent thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/cogent/thesaurus/synonyms>. |
| MLA | Smart Define. "cogent thesaurus" 29 March 2016. Web. 26 September 2026. <https://smartdefine.org/cogent/thesaurus/synonyms> |