120 entries under sturdy topic. ×
| energetic(adjective, strong, direct, tough, solid) | |
| even(verb, adjective, calm, check, strong) | |
| forcible(adjective, clear, strong, direct, tough) | |
| imperturbable(adjective, calm, firm, sensible, solid) | |
| resolute(adjective, calm, strong, secure, easy) | |
| sinewy(adjective, strong, tough, fit, solid) | |
| tenacious(adjective, strong, secure, tough, fit) | |
| unqualified(adjective, firm, solid, stable, fixed) | |
| unwavering(adjective, calm, strong, secure, firm) | |
| abiding(adjective, calm, strong, secure, tough) | |
| ardent(adjective, firm, solid, enthusiastic, true) | |
| brick-wall(adjective, calm, strong, secure, firm) | |
| brick wall(expression, adjective, calm, strong, hard) | |
| calm(adjective, strong, secure, reasonable, firm) | |
| capable(adjective, strong, direct, tough, fit) | |
| compacted(adjective, strong, hard, substantial) | |
| dimensional(adjective, strong, hard, substantial) | |
| equable(adjective, calm, strong, secure, firm) | |
| hard as nails(expression, adjective, idiom, strong, tough) | |
| heavy-duty(adjective, strong, tough, solid, heavy) |
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| APA | Smart Define. (2016). sound thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/sound/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "sound thesaurus" https://smartdefine.org/sound/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2016, sound thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/sound/thesaurus/synonyms>. |
| MLA | Smart Define. "sound thesaurus" 24 March 2016. Web. 28 September 2026. <https://smartdefine.org/sound/thesaurus/synonyms> |