- Definitions|1
- Thesaurus|454
- Abbreviations|0
67 entries under adjective topic. ×
| invulnerable | |
| pressure-tight(tight, proof, impervious, hermetic) | |
| proof(tight, impervious, hermetic) | |
| secure(verb, closed) | |
| shut(verb, closed, sealed) | |
| enclosed(tight, proof, impervious, hermetic) | |
| firm | |
| hermetically sealed | |
| indisputable | |
| pressurized(tight, proof, impervious, hermetic) | |
| rainproof(resistant, impervious, watertight, waterproof) | |
| tightly sealed(expression, idiom, tight, proof) | |
| air-locked(tight, proof, impervious, hermetic) | |
| air-proof(tight, proof, impervious, hermetic) | |
| blind(sound, firm, fast, short) | |
| gas proof(tight, proof, impervious, hermetic) | |
| hermetically-impervious(tight, proof, impervious, hermetic) | |
| hermetically-sealed(tight, proof, impervious, hermetic) | |
| incontestable | |
| leak-proof(dense, resistant, impervious, 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> |