airtight

American  

[air-tahyt] / ˈɛərˌtaɪt /

adjective

1. preventing the entrance or escape of air or gas.

2. having no weak points or openings of which an opponent may take advantage.

   an airtight contract.

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airtight British  

/ ˈɛəˌtaɪt /

adjective

1. not permitting the passage of air either in or out

2. having no weak points; rigid or unassailable

   this categorization is hardly airtight

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Other Word Forms

• airtightly adverb
• airtightness noun

Etymology

Origin of airtight

First recorded in 1750–60; air ¹ + tight

Example Sentences

Store the cookies in an airtight container at room temperature for up to 5 days.

From Salon

More: Your estate plan needs to be absolutely airtight.

From MarketWatch

With reigning MVP Shai Gilgeous-Alexander pacing the offensive attack and an airtight defense walling off the rim on the other end, the Thunder have put up a mind-blowing +16.0 net rating, entering Wednesday’s game.

From The Wall Street Journal

Each fruit sample was sealed in an airtight container, and the team recorded details including species, size, color and softness.

From Science Daily

For generations of women, the logic has seemed airtight: Focus on a career in your 20s, and worry about starting a family once you are established in a job.

From The Wall Street Journal

Related Words

• indisputable
• invulnerable
• irrefutable
• unassailable