53 entries under sound topic. ×
| solid(adjective, good, right, reasonable) | |
| true(reasonable, rational) | |
| trustworthy(good, right, reasonable, rational) | |
| attested(good, right, reasonable, rational) | |
| authentic(good, right, reasonable, rational) | |
| binding(reasonable, rational) | |
| bona fide(expression, good, right, reasonable) | |
| conclusive(reasonable, rational, influential, winning) | |
| confirmed(good, right, reasonable, rational) | |
| credible(good, right, reasonable, rational) | |
| defensible(reasonable, rational) | |
| determinative(reasonable, rational) | |
| genuine(good, right, reasonable, rational) | |
| in force(expression, good, right, reasonable) | |
| irrefutable(reasonable, rational) | |
| just(good, right, reasonable, rational) | |
| justifiable(reasonable, rational) | |
| lawful(good, right, reasonable, rational) | |
| legal(good, right, reasonable, rational) | |
| legitimate(good, right, reasonable, rational) |
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| APA | Smart Define. (2015). efficient thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/efficient/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "efficient thesaurus" https://smartdefine.org/efficient/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, efficient thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/efficient/thesaurus/synonyms>. |
| MLA | Smart Define. "efficient thesaurus" 13 April 2015. Web. 22 September 2026. <https://smartdefine.org/efficient/thesaurus/synonyms> |