138 entries under rigid topic. ×
| ossified(adjective, firm, solid, determined, resolute) | |
| packed(adjective, set, strong, firm, solid) | |
| petrified(adjective, firm, solid, tight) | |
| frozen(adjective, firm, solid, stiff, compact) | |
| graceless(adjective, firm, solid, stiff) | |
| taut(adjective, rough, firm, harsh, solid) | |
| valid(strength, correct, severe, true, real) | |
| brittle(adjective, firm, solid, stiff) | |
| compacted(adjective, set, strong, firm, solid) | |
| consolidated(adjective, set, strong, firm, deep) | |
| impermeable(adjective, set, tough, firm, solid) | |
| impliable(adjective, firm, solid, stiff) | |
| incompliant(adjective, severe, firm, solid, stiff) | |
| indurated(adjective, set, strong, firm, careless) | |
| nonporous(tough, solid, inflexible) | |
| poignant(adjective, severe, evil, nasty, harsh) | |
| resolved(adjective, determined, fixed, stubborn) | |
| staunch(adjective, strong, firm, resolute, sturdy) | |
| unadaptable(adjective, set, stiff, resolute) | |
| unbendable(adjective, firm, inflexible, unbending) |
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| APA | Smart Define. (2016). hard thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/hard/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "hard thesaurus" https://smartdefine.org/hard/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2016, hard thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/hard/thesaurus/synonyms>. |
| MLA | Smart Define. "hard thesaurus" 24 March 2016. Web. 25 September 2026. <https://smartdefine.org/hard/thesaurus/synonyms> |