72 entries under sturdy topic. ×
| regular(verb, adjective, close, sound, warm) | |
| tough(adjective, calm, strong, firm, solid) | |
| unchangeable(adjective, calm, strong, secure, firm) | |
| uniform(adjective, calm, strong, secure, firm) | |
| unvarying(adjective, calm, strong, secure, firm) | |
| brick-wall(adjective, calm, strong, secure, firm) | |
| calm(adjective, strong, secure, firm, sensible) | |
| equable(adjective, calm, strong, secure, firm) | |
| even(verb, adjective, calm, strong, sound) | |
| perdurable(calm, strong, tough, solid, substantial) | |
| poised(adjective, calm, strong, secure, firm) | |
| safe(adjective, calm, strong, secure, firm) | |
| single-minded(adjective, firm, sensible, solid, intense) | |
| wholehearted(adjective, complete, firm, honest, total) | |
| set in stone(expression, adjective, idiom, calm, strong) | |
| solid as a rock(expression, adjective, idiom, calm, strong) | |
| certain(adjective, firm, solid, stable, fixed) | |
| levelheaded(adjective, firm, sensible, solid, steady) | |
| never-failing(adjective, firm, solid, intense, stable) | |
| patterned(adjective, firm, solid, stable, fixed) |
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| APA | Smart Define. (2016). fast thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/fast/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "fast thesaurus" https://smartdefine.org/fast/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, fast thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/fast/thesaurus/synonyms>. |
| MLA | Smart Define. "fast thesaurus" 1 April 2016. Web. 26 September 2026. <https://smartdefine.org/fast/thesaurus/synonyms> |