- Definitions|2
- Thesaurus|1k
- Abbreviations|0
50 entries under rational topic. ×
| confirmed(verb, adjective, sound, reasonable) | |
| authentic(adjective, good, sound, right, reasonable) | |
| good(adjective, sound, reasonable) | |
| right(adjective, good, sound, reasonable, solid) | |
| authoritative(adjective, sound, reasonable, solid, proper) | |
| irrefutable(adjective, sound, reasonable, certain) | |
| strong(adjective, sound, reasonable) | |
| valid(adjective, good, sound, right, reasonable) | |
| well-founded(adjective, sound, reasonable, logical) | |
| conclusive(sound, reasonable) | |
| genuine(adjective, good, sound, right, reasonable) | |
| legal(adjective, sound, reasonable, proper) | |
| legitimate(adjective, sound, reasonable) | |
| solid(adjective, sound, reasonable, proper) | |
| sound(adjective, good, reasonable, sensible, certain) | |
| substantial(adjective, sound, reasonable) | |
| trustworthy(adjective, good, sound, right, reasonable) | |
| accurate(adjective, good, set, sound, reasonable) | |
| efficient(sound, reasonable) | |
| justifiable(adjective, sound, reasonable, logical) |
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| APA | Smart Define. (2015). proven thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/proven/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "proven thesaurus" https://smartdefine.org/proven/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, proven thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/proven/thesaurus/synonyms>. |
| MLA | Smart Define. "proven thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/proven/thesaurus/synonyms> |