50 entries under rational topic. ×
| valid(adjective, sound, right, reasonable) | |
| proven(verb, adjective, sound, reasonable) | |
| attested(verb, good, sound, right, reasonable) | |
| true(adjective, good, sound, complete, reasonable) | |
| authoritative(adjective, good, sound, right, reasonable) | |
| official(good, sound, right, reasonable, proper) | |
| tested(verb, adjective, good, sound, right) | |
| well-founded(good, sound, right, reasonable) | |
| well-grounded(good, sound, right, reasonable) | |
| irrefutable(adjective, good, sound, right, reasonable) | |
| just(adjective, good, sound, right, reasonable) | |
| legit(good, sound, right, reasonable) | |
| pure(good, sound, right, reasonable, honest) | |
| sound(reasonable, reliable, trustworthy, respected) | |
| stringent(good, sound, right, reasonable) | |
| strong(good, sound, right, reasonable) | |
| substantial(good, sound, right, reasonable, certain) | |
| telling(sound, reasonable) | |
| trustworthy(good, sound, right, reasonable, honest) | |
| accurate(sound, reasonable, reliable, trustworthy) |
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| APA | Smart Define. (2016). confirmed thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/confirmed/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "confirmed thesaurus" https://smartdefine.org/confirmed/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, confirmed thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/confirmed/thesaurus/synonyms>. |
| MLA | Smart Define. "confirmed thesaurus" 26 February 2016. Web. 23 September 2026. <https://smartdefine.org/confirmed/thesaurus/synonyms> |