- Definitions|1
- Thesaurus|716
- Abbreviations|0
| plausible | |
| strong(good, sound, right, reasonable, rational) | |
| unquestionable(adjective, definite) | |
| authoritative(good, sound, right, reasonable, rational) | |
| binding(sound, reasonable, rational) | |
| commonsensical(adjective, reason, sane) | |
| confirmed(good, sound, right, reasonable, rational) | |
| etched | |
| faithful(correct, proper, moral) | |
| lawful(good, sound, right, reasonable, rational) | |
| learned(knowledgeable, cultured, educated, erudite, scholarly) | |
| levelheaded(adjective, reason, sane) | |
| logical(good, sound, right, reasonable, rational) | |
| proper(correct, moral) | |
| rooted | |
| sapient(adjective, sound, reason, knowledgeable, cultured) | |
| set | |
| trustworthy(good, sound, right, reasonable, rational) | |
| versed(adjective, knowledgeable, cultured, educated, erudite) | |
| weighty(good, sound, right, reasonable, rational) |
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| APA | Smart Define. (2016). well-grounded thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/well-grounded/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "well-grounded thesaurus" https://smartdefine.org/well-grounded/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, well-grounded thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/well-grounded/thesaurus/synonyms>. |
| MLA | Smart Define. "well-grounded thesaurus" 29 March 2016. Web. 26 September 2026. <https://smartdefine.org/well-grounded/thesaurus/synonyms> |