| mathematical precision | |
| mercilessness(noun, ruthlessness, pitilessness, relentlessness) | |
| mulishness(noun, perseverance, obstinacy, stubbornness, inflexibility) | |
| niceness | |
| nicety | |
| orthodoxy | |
| perfection | |
| permanency | |
| perpetualness | |
| persistency | |
| pigheadedness(noun, perseverance, obstinacy, stubbornness, inflexibility) | |
| pitilessness(noun, ruthlessness, mercilessness, relentlessness) | |
| precisianism | |
| punctilio | |
| purism | |
| refinement | |
| regimentation(noun, discipline) | |
| resistance(noun, firmness, protection, security, toughness) | |
| resoluteness(noun, firmness, stiffness) | |
| resolution |
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| APA | Smart Define. (2015). rigidity thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/rigidity/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "rigidity thesaurus" https://smartdefine.org/rigidity/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, rigidity thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/rigidity/thesaurus/synonyms>. |
| MLA | Smart Define. "rigidity thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/rigidity/thesaurus/synonyms> |