116 entries under substantial topic. ×
| reliable(adjective, calm, good, clear, strong) | |
| sturdy(adjective, calm, strong, hard, complete) | |
| hearty(adjective, health, good, strong, complete) | |
| vigorous(adjective, health, strong, complete, tough) | |
| secure(adjective, calm, good, clear, strong) | |
| hardy(adjective, health, strong, tough, fit) | |
| tough(adjective, calm, strong, fit, firm) | |
| well-founded(adjective, calm, good, strong, secure) | |
| rugged(adjective, strong, tough, fit, solid) | |
| heavy(adjective, strong, hard, tough, solid) | |
| staunch(adjective, health, calm, strong, secure) | |
| sure(adjective, calm, clear, strong, secure) | |
| balanced(adjective, calm, strong, secure, reasonable) | |
| powerful(adjective, clear, strong, direct, tough) | |
| able-bodied(adjective, strong, tough, right, fit) | |
| potent(adjective, clear, strong, direct, tough) | |
| together(adjective, calm, good, strong, complete) | |
| well-built(adjective, calm, strong, secure, tough) | |
| stalwart(adjective, calm, strong, tough, fit) | |
| dense(adjective, strong, hard, compact) |
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| APA | Smart Define. (2016). sound thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/sound/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "sound thesaurus" https://smartdefine.org/sound/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, sound thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/sound/thesaurus/synonyms>. |
| MLA | Smart Define. "sound thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/sound/thesaurus/synonyms> |