- Definitions|2
- Thesaurus|5.6k
- Abbreviations|0
265 entries under rational topic. ×
| substantial(adjective, sound, fair, significant) | |
| trustworthy(adjective, good, sound, clean, honest) | |
| warrantable(sound, justified, defensible) | |
| attentive(adjective, sensible, restrained, careful) | |
| calculating(adjective, smart, bright, sensible, restrained) | |
| authoritative | |
| understandable(adjective, sound, slight, proper) | |
| candid(adjective, good, clean, honest, fair) | |
| clear-cut(adjective, clear, sound, sensible, plain) | |
| cogitative(adjective, keen, sensible, deep) | |
| engrossed(adjective, keen, deep, intelligent) | |
| keen(adjective, smart, bright, sensible) | |
| kosher(good, sound, fit, appropriate, sensible) | |
| legal(sound, valid, tolerable, lawful) | |
| legit(adjective, good, sound, correct, right) | |
| maintainable(adjective, sound, justified, conceivable) | |
| meditative(adjective, keen, deep, intelligent) | |
| melancholy(adjective, keen, deep, thoughtful) | |
| museful(adjective, keen, deep, thoughtful) | |
| musing(adjective, keen, deep, thoughtful) |
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| APA | Smart Define. (2016). reasonable thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/reasonable/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "reasonable thesaurus" https://smartdefine.org/reasonable/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, reasonable thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/reasonable/thesaurus/synonyms>. |
| MLA | Smart Define. "reasonable thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/reasonable/thesaurus/synonyms> |