124 entries under rigid topic. ×
| stony(adjective, hard, firm, solid, stiff) | |
| strict(adjective, strong, hard, severe, stiff) | |
| unfailing(adjective, set, clear, certain, regular) | |
| unmodifiable(adjective, set, secure, certain, steady) | |
| concrete(adjective, set, strong, hard, solid) | |
| congealed(verb, adjective, set, hard, firm) | |
| dyed-in-the-wool(adjective, set, hard, strict) | |
| incorrigible(adjective, even, inflexible, established) | |
| jelled(adjective, set, firm, solid, heavy) | |
| ossified(adjective, set, firm, solid, heavy) | |
| refractory(adjective, hard, tough, rough, firm) | |
| rigorous(adjective, hard, severe, stiff) | |
| severe | |
| steely(adjective, hard, firm, solid) | |
| thick(adjective, strong, hard, firm, solid) | |
| unadaptable(adjective, set, hard, stiff) | |
| contracted(verb, adjective, hard, slight, fine) | |
| hardened(adjective, set, hard, complete, firm) | |
| harsh(adjective, mean, hard, severe, rough) | |
| incompliant(adjective, hard, firm, solid, stiff) |
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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> |