| inelasticity(noun, protection, security, rigidity, hardness) | |
| infinite duration | |
| infinity | |
| inflexibility(noun, firmness, protection, security, toughness) | |
| infrangibility | |
| integrity(noun, health, condition, firmness, better) | |
| intestinal fortitude(noun, expression, time, strength, resolution) | |
| invariability | |
| inveteracy | |
| leatherlikeness | |
| lengthiness | |
| long standing | |
| lustiness(noun, health, force, body, power) | |
| mass | |
| materiality | |
| maturity(noun, support, control, strength, balance) | |
| metier | |
| might(noun, health, force, body, power) | |
| muscle(noun, health, force, body, power) | |
| nerve(noun, health, force, body, power) |
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| APA | Smart Define. (2016). durability thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/durability/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "durability thesaurus" https://smartdefine.org/durability/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2016, durability thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/durability/thesaurus/synonyms>. |
| MLA | Smart Define. "durability thesaurus" 29 March 2016. Web. 21 September 2026. <https://smartdefine.org/durability/thesaurus/synonyms> |