35 entries under rational topic. ×
| logical(good, sound, right, reasonable) | |
| persuasive(good, sound, right, reasonable) | |
| proven(sound, reasonable, accepted, permitted) | |
| reasonable(sound, valid, lawful, rightful) | |
| solid(good, sound, right, reasonable) | |
| stringent(good, sound, right, reasonable) | |
| strong(good, sound, right, reasonable) | |
| telling(sound, reasonable) | |
| tested(good, sound, right, reasonable) | |
| ultimate(sound, reasonable) | |
| unadulterated(good, sound, right, reasonable, true) | |
| unanswerable(good, sound, right, reasonable) | |
| uncorrupted(good, sound, right, reasonable) | |
| well-founded(good, sound, right, reasonable) | |
| well-grounded(good, sound, right, reasonable) |
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| APA | Smart Define. (2015). official thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/official/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "official thesaurus" https://smartdefine.org/official/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, official thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/official/thesaurus/synonyms>. |
| MLA | Smart Define. "official thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/official/thesaurus/synonyms> |