- Definitions|2
- Thesaurus|5k
- Abbreviations|0
93 entries under sound topic. ×
| genuine(adjective, good, right, reasonable) | |
| potent(adjective, good, strong, right) | |
| authentic(adjective, good, right, reasonable) | |
| secure(adjective, calm, quiet, strong, hard) | |
| stalwart(adjective, calm, strong, secure) | |
| telling(adjective, strong, reasonable, important) | |
| vigorous(adjective, strong, complete, tough) | |
| hardy(adjective, strong, tough, fit) | |
| rugged(adjective, strong, fit, solid) | |
| well-founded(adjective, calm, good, strong) | |
| cogent(reasonable, rational) | |
| persuasive(adjective, good, strong, right) | |
| staunch(adjective, calm, strong, secure) | |
| trustworthy(good, right, reasonable, rational) | |
| authoritative(adjective, good, strong, right) | |
| efficacious(adjective, good, strong, right) | |
| forceful(adjective, strong, tough, solid) | |
| hale(adjective, strong, complete, tough) | |
| legitimate(good, right, reasonable, material) | |
| tenacious(adjective, strong, tough, fit) |
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| APA | Smart Define. (2016). substantial thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/substantial/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "substantial thesaurus" https://smartdefine.org/substantial/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, substantial thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/substantial/thesaurus/synonyms>. |
| MLA | Smart Define. "substantial thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/substantial/thesaurus/synonyms> |