airtight

Words with a similar base: airtight

'airtight'

[airtight.s.01] as in: having no weak points

Examples:
an airtight defense
an airtight argument

'airtight'

[airtight.s.02] as in: not allowing air or gas to pass in or out

Origins

					airtight (English)
├── air (English)
│   └── air (Middle English (1100-1500))
│       └── aeir (Anglo-Norman)
└── tight (English)
    └── thight (Middle English (1100-1500))
        └── þéttr (Old Norse)

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