44 entries under firmness topic. ×
| rigidity(noun, strain, pressure, protection) | |
| hardness(noun, protection, severity, security) | |
| rigor(noun, severity, harshness, strictness) | |
| inflexibility(noun, protection, severity, security) | |
| rigorousness(noun, difficulty, rigidity, inflexibility) | |
| toughness(noun, difficulty, protection, security) | |
| formality(noun, drive, reserve, severity) | |
| harshness(noun, severity, conformity, strictness) | |
| severity(noun, harshness, conformity, strictness) | |
| solidity(noun, protection, security, stability) | |
| tension(noun, rigidity, tightness, tautness) | |
| austerity(noun, severity, harshness, conformity) | |
| grimness(noun, severity, strictness, rigidity) | |
| tautness(noun, tension, rigidity, tightness) | |
| immovability(noun, rigidity, inelasticity) | |
| sternness(noun, severity, harshness, conformity) | |
| acerbity(severity, strictness, rigidity, inflexibility) | |
| immobility(noun, stability, toughness, rigidity) | |
| stability(noun, stability, rigidity) | |
| aplomb(stability, rigidity) |
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| APA | Smart Define. (2015). stiffness thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/stiffness/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "stiffness thesaurus" https://smartdefine.org/stiffness/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, stiffness thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/stiffness/thesaurus/synonyms>. |
| MLA | Smart Define. "stiffness thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/stiffness/thesaurus/synonyms> |