- Definitions|2
- Thesaurus|173
- Abbreviations|0
| steadfastness | |
| stiffness(noun, protection, security, rigidity, hardness) | |
| stopper | |
| striking back(expression, resistance, invulnerability) | |
| struggle(resistance, invulnerability) | |
| support(resistance, invulnerability) | |
| unsusceptibility(resistance, invulnerability) | |
| warding off(expression, resistance, invulnerability) | |
| watch(resistance, invulnerability) | |
| waterproofness(noun, protection, security) | |
| watertightness(noun, resistance, protection, security, invulnerability) | |
| withstanding(resistance, invulnerability) |
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| APA | Smart Define. (2015). impermeability thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/impermeability/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "impermeability thesaurus" https://smartdefine.org/impermeability/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, impermeability thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/impermeability/thesaurus/synonyms>. |
| MLA | Smart Define. "impermeability thesaurus" 13 April 2015. Web. 23 September 2026. <https://smartdefine.org/impermeability/thesaurus/synonyms> |