44 entries under firmness topic. ×
| constancy(stability, rigidity) | |
| determination(noun, severity, strictness, rigidity) | |
| durability(noun, protection, security, toughness) | |
| prudery(noun, rigidity, affectation) | |
| resistance(noun, protection, security, toughness) | |
| security(noun, protection, rigidity, tightness) | |
| strictness(noun, severity, harshness, conformity) | |
| balance(noun, quality, feeling, touch, character) | |
| precision(noun, severity, harshness, conformity) | |
| stringency(noun, severity, harshness, conformity) | |
| adherence | |
| assurance | |
| backbone(drive, rigidity, strengthener) | |
| cohesion | |
| dependability | |
| endurance | |
| establishment | |
| fastness | |
| hardheartedness(rigidity, inflexibility) | |
| maturity |
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| APA | Smart Define. (2015). stiffness thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/stiffness/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "stiffness thesaurus" https://smartdefine.org/stiffness/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, stiffness thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/stiffness/thesaurus/synonyms>. |
| MLA | Smart Define. "stiffness thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/stiffness/thesaurus/synonyms> |