| nonresilient | |
| nonstretchable | |
| numbed(adjective, hard, firm, solid, stiff) | |
| ossified(adjective, hard, firm, solid, stiff) | |
| pat(adjective, determined, resolute, obstinate, uncompromising) | |
| petrified(adjective, hard, firm, solid, stiff) | |
| refractory(adjective, hard, tough, firm, solid) | |
| rheumatic(adjective, hard, firm, solid, stiff) | |
| rock-ribbed | |
| sequacious | |
| severe | |
| single-minded(adjective, tough, severe, firm, harsh) | |
| solidified(adjective, hard, tough, firm, solid) | |
| springless | |
| starched(adjective, hard, firm, solid, stiff) | |
| starchy(adjective, hard, firm, solid, stiff) | |
| steadfast(adjective, determined, resolute, obstinate, uncompromising) | |
| stern | |
| stiff as a board(expression, adjective, idiom, hard, firm) | |
| stiffened |
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| APA | Smart Define. (2015). inelastic thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/inelastic/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "inelastic thesaurus" https://smartdefine.org/inelastic/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, inelastic thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/inelastic/thesaurus/synonyms>. |
| MLA | Smart Define. "inelastic thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/inelastic/thesaurus/synonyms> |