- Definitions|1
- Thesaurus|782
- Abbreviations|0
92 entries under sound topic. ×
| good(right, reasonable, rational, genuine) | |
| just(adjective, good, right, reasonable) | |
| solid(adjective, calm, good, strong) | |
| valid(adjective, good, right, reasonable) | |
| cogent(adjective, good, correct, reasonable) | |
| rational(adjective, reasonable, reason, logical) | |
| reasonable(adjective, correct, reason, sensible) | |
| strong(adjective, calm, good, right) | |
| firm(adjective, calm, strong, heavy) | |
| legitimate(adjective, good, right, reasonable) | |
| secure(adjective, calm, good, strong) | |
| stable(adjective, strong, secure, tough) | |
| substantial(adjective, calm, good, strong) | |
| true(reasonable, rational, absolute, valid) | |
| steady(adjective, calm, strong, secure) | |
| sturdy(adjective, calm, strong, secure) | |
| weighty(good, right, reasonable, rational) | |
| credible(good, right, reasonable, rational) | |
| durable(adjective, calm, strong, secure) | |
| logical(adjective, good, right, reasonable) |
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| APA | Smart Define. (2016). well-founded thesaurus. Retrieved September 29, 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 29, 2026). |
| Harvard | Smart Define 2016, well-founded thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/well-founded/thesaurus/synonyms>. |
| MLA | Smart Define. "well-founded thesaurus" 29 March 2016. Web. 29 September 2026. <https://smartdefine.org/well-founded/thesaurus/synonyms> |