6
airtight(adjective, tight, proof, impervious, hermetic)
5
gas-tight(adjective, tight, proof, impervious, hermetic)
3
hermetic(adjective, tight, proof, impervious)
3
pressure-tight(adjective, tight, proof, impervious, hermetic)
2
impermeable(adjective, tight, proof, impervious, hermetic)
2
tight(adjective, proof, impervious, hermetic)
1
air-locked(adjective, tight, proof, impervious, hermetic)
1
air-proof(adjective, tight, proof, impervious, hermetic)
1
airproof(adjective, tight, proof, impervious, hermetic)
1
dampproof(adjective, tight, proof, impervious, hermetic)
1
enclosed(adjective, tight, proof, impervious, hermetic)
1
gas proof(adjective, tight, proof, impervious, hermetic)
1
gastight(adjective, tight, proof, impervious, hermetic)
1
hermetical(adjective, tight, proof, impervious, hermetic)
1
hermetically-impervious(adjective, tight, proof, impervious, hermetic)
1
hermetically-sealed(adjective, tight, proof, impervious, hermetic)
1
invulnerable
1
leaktight(adjective, tight, proof, impervious, hermetic)
1
liquid-tight(adjective, tight, proof, impervious, hermetic)
1
nonleaking(adjective, tight, proof, impervious, hermetic)
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APASmart Define. (2013). air-tight thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/air-tight/thesaurus/synonyms
ChicagoSmart Define. 2013. "air-tight thesaurus" https://smartdefine.org/air-tight/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2013, air-tight thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/air-tight/thesaurus/synonyms>.
MLASmart Define. "air-tight thesaurus" 28 June 2013. Web. 22 September 2026. <https://smartdefine.org/air-tight/thesaurus/synonyms>