airtight
WordReference English Thesaurus © 2025
Sense: Not allowing air to enter
Synonyms:
impermeable to air, sealed Collocations, shut tight, tight Collocations, airless, waterproof, rainproof, leakproof, hermetically sealed, dampproof, lightproof, noiseproof, soundproof, water-resistant, weatherproof
Sense: Incontestable
Synonyms:
unassailable, indisputable, irrefutable, invulnerable, accurate Collocations, certain Collocations, incontestable, undeniable