- Definitions|1
- Thesaurus|454
- Abbreviations|0
39 entries under impervious topic. ×
| gas proof(adjective, tight, proof, hermetic) | |
| hermetically-impervious(adjective, tight, proof, hermetic) | |
| hermetically-sealed(adjective, tight, proof, hermetic) | |
| leak-proof(adjective, dense, resistant, impenetrable) | |
| leaktight(adjective, tight, proof, hermetic) | |
| liquid-tight(adjective, tight, proof, hermetic) | |
| nonleaking(adjective, tight, proof, hermetic) | |
| pressureproof(adjective, tight, proof, hermetic) | |
| pressurised(adjective, tight, proof, hermetic) | |
| retentive(adjective, tight, proof, hermetic) | |
| sealed-in(adjective, tight, proof, hermetic) | |
| totally enclosed(adjective, tight, proof, hermetic) | |
| water-proof(adjective, tight, proof, hermetic) | |
| water-tight(adjective, tight, proof, hermetic) | |
| dense(adjective, resistant, impenetrable, watertight) | |
| impassable(adjective, dense, resistant, impenetrable) | |
| nonporous(adjective, dense, resistant, impenetrable) | |
| reclosable(adjective, tight, proof, hermetic) | |
| water-resistant(adjective, dense, resistant, impenetrable) |
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| APA | Smart Define. (2015). airtight thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/airtight/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "airtight thesaurus" https://smartdefine.org/airtight/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2015, airtight thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/airtight/thesaurus/synonyms>. |
| MLA | Smart Define. "airtight thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/airtight/thesaurus/synonyms> |