126 entries under sturdy topic. ×
| persistent(adjective, strong, tough, flat, firm) | |
| secure(adjective, strong, hard, sound, tough) | |
| lasting(adjective, strong, tough, firm, stable) | |
| unvarying(adjective, dull, clear, firm, solid) | |
| regular(adjective, firm, solid, exact, proper) | |
| solid(adjective, set, strong, hard, sound) | |
| sure(adjective, clear, strong, flat, firm) | |
| set in stone(expression, adjective, idiom, mean, hard) | |
| tenacious(adjective, strong, sound, secure, tough) | |
| abiding(adjective, strong, tough, flat, firm) | |
| unfaltering(adjective, firm, solid, certain, determined) | |
| durable(adjective, strong, sound, secure, tough) | |
| indestructible(adjective, tough, stable, constant) | |
| tough(adjective, mean, strong, hard, sound) | |
| strong(adjective, hard, sound, secure, tough) | |
| staunch(adjective, strong, sound, tough, flat) | |
| uniform(adjective, firm, solid, ordinary, usual) | |
| balanced(verb, adjective, firm, solid, ordinary) | |
| hard(adjective, adverb, mean, strong, rough) | |
| resistant(adjective, strong, tough, firm, determined) |
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| APA | Smart Define. (2016). fixed thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/fixed/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "fixed thesaurus" https://smartdefine.org/fixed/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, fixed thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/fixed/thesaurus/synonyms>. |
| MLA | Smart Define. "fixed thesaurus" 16 March 2016. Web. 23 September 2026. <https://smartdefine.org/fixed/thesaurus/synonyms> |