91 entries under solid topic. ×
| indigestible(adjective, strong, hard, sturdy) | |
| molded(adjective, strong, hard, sturdy) | |
| muscular(strong, thin, robust, sinewy) | |
| placed(adjective, firm, inflexible, unbending) | |
| positioned(adjective, firm, inflexible, unbending) | |
| seasoned(adjective, strong, hard, unfeeling) | |
| sited(adjective, firm, inflexible, syrupy) | |
| situate(adjective, firm, inflexible, unbending) | |
| steeled(adjective, strong, hard, unfeeling) | |
| strapping(strong, thin, robust, sinewy) | |
| tough as nails(expression, adjective, idiom, strong, hard) |
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| APA | Smart Define. (2015). stiff thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/stiff/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "stiff thesaurus" https://smartdefine.org/stiff/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, stiff thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/stiff/thesaurus/synonyms>. |
| MLA | Smart Define. "stiff thesaurus" 24 December 2015. Web. 22 September 2026. <https://smartdefine.org/stiff/thesaurus/synonyms> |