203 entries under solid topic. ×
| faithful(adjective, good, strong, correct, reasonable) | |
| flawless(adjective, good, bad, great, complete) | |
| sober(adjective, calm, good, dull, hard) | |
| tough(adjective, calm, strong, fit, firm) | |
| well-founded(adjective, calm, good, strong, secure) | |
| plausible(adjective, clear, reasonable, honest, sensible) | |
| rugged(adjective, strong, tough, fit) | |
| true(adjective, good, clear, strong, correct) | |
| unblemished(adjective, good, bad, great, complete) | |
| unimpaired(verb, adjective, good, bad, strong) | |
| credible(adjective, reasonable, sensible, rational) | |
| heavy(adjective, strong, hard, tough) | |
| levelheaded(adjective, calm, good, quiet, hard) | |
| staunch(adjective, health, calm, strong, secure) | |
| sure(adjective, calm, clear, strong, secure) | |
| balanced(adjective, calm, strong, secure, reasonable) | |
| loyal(adjective, good, strong, clean, firm) | |
| powerful(adjective, clear, strong, direct, tough) | |
| able-bodied(adjective, strong, tough, right, fit) | |
| certain(adjective, clear, strong, easy, firm) |
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| APA | Smart Define. (2016). sound thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/sound/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "sound thesaurus" https://smartdefine.org/sound/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, sound thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/sound/thesaurus/synonyms>. |
| MLA | Smart Define. "sound thesaurus" 24 March 2016. Web. 24 September 2026. <https://smartdefine.org/sound/thesaurus/synonyms> |