226 entries under solid topic. ×
| impervious(adjective, set, strong, tough) | |
| impliable(adjective, hard, firm, stiff) | |
| in fine feather(expression, adjective, idiom, strong, sound) | |
| indurate(adjective, mean, hard, firm) | |
| insured(verb, adjective, set, certain) | |
| intense(adjective, complete, firm, total) | |
| iron(adjective, mean, strong, hard, tough) | |
| jellied(adjective, set, heavy, deep) | |
| locked(verb, adjective, strong, sound, secure) | |
| made certain(expression, adjective, set, certain) | |
| mechanical(adjective, hard, firm, ordinary) | |
| mighty(adjective, strong, sound, tough) | |
| muscular(adjective, strong, sound, tough) | |
| nailed(verb, adjective, strong, secure) | |
| numbed(verb, adjective, hard, firm) | |
| opaque(adjective, set, heavy, deep) | |
| powerful(adjective, strong, sound, tough) | |
| pronounced(adjective, clear, exact, certain) | |
| racked(adjective, set, certain, sure) | |
| reinforced(verb, adjective, strong, sound, tough) |
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| APA | Smart Define. (2016). fixed thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/fixed/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "fixed thesaurus" https://smartdefine.org/fixed/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2016, fixed thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/fixed/thesaurus/synonyms>. |
| MLA | Smart Define. "fixed thesaurus" 16 March 2016. Web. 21 September 2026. <https://smartdefine.org/fixed/thesaurus/synonyms> |