- Definitions|1
- Thesaurus|782
- Abbreviations|0
91 entries under reasonable topic. ×
| probable(adjective, sensible, true, natural) | |
| rightful(adjective, valid, lawful, justified) | |
| accepted(adjective, sensible, natural, normal) | |
| conclusive(adjective, strong, sound, easy) | |
| irrefutable(sound, rational, absolute, indisputable) | |
| legit(adjective, good, sound, right) | |
| normal(good, correct, sensible, proper) | |
| orthodox(sensible, natural, normal, valid) | |
| right(adjective, good, sound, rational) | |
| telling(sound, rational) | |
| acceptable(adjective, justified, defensible) | |
| accredited(sensible, natural, normal, valid) | |
| allowable(adjective, justified, defensible) | |
| arguable(justified, defensible) | |
| attested(good, sound, right, rational) | |
| condonable(adjective, justified, defensible) | |
| customary(sensible, natural, normal, valid) | |
| defensible(adjective, sound, rational, justified) | |
| determinative(sound, rational) | |
| efficacious(good, sound, right, rational) |
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| APA | Smart Define. (2016). well-founded thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/well-founded/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "well-founded thesaurus" https://smartdefine.org/well-founded/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2016, well-founded thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/well-founded/thesaurus/synonyms>. |
| MLA | Smart Define. "well-founded thesaurus" 29 March 2016. Web. 28 September 2026. <https://smartdefine.org/well-founded/thesaurus/synonyms> |