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Adjective
- 1. airtight, air-tight, invulnerable (vs. vulnerable)
- usage: having no weak points; "an airtight defense"; "an airtight argument"
- 2. airtight, air-tight, gas-tight, tight (vs. leaky)
- usage: not allowing air or gas to pass in or out
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Definition and meaning of airtight (Dictionary)