- Definitions|2
- Thesaurus|173
- Abbreviations|0
45 entries under noun topic. ×
| temper(protection, security, rigidity, hardness) | |
| tensile strength(expression, protection, security, rigidity) | |
| toughness(protection, security, rigidity, hardness) | |
| assurance | |
| confidence | |
| constancy | |
| darkness | |
| decision | |
| determination | |
| dimness | |
| impassability | |
| memory | |
| murkiness | |
| obscurity | |
| obstinacy | |
| opaqueness | |
| protection(resistance, security, invulnerability, waterproofness) | |
| resolution | |
| retention | |
| retentiveness |
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| APA | Smart Define. (2015). impermeability thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/impermeability/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "impermeability thesaurus" https://smartdefine.org/impermeability/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2015, impermeability thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/impermeability/thesaurus/synonyms>. |
| MLA | Smart Define. "impermeability thesaurus" 13 April 2015. Web. 28 September 2026. <https://smartdefine.org/impermeability/thesaurus/synonyms> |