airtight

[air-tahyt]

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.

airtight

/ 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

Other Word Forms

• airtightly adverb
• airtightness noun

Word History and Origins

Origin of airtight¹

First recorded in 1750–60; air ¹ + tight

Example Sentences

This stone is too porous, that boulder is too jagged; none of them has a square footage large enough to crush me so flat that an airtight seal will form between myself and the ground.

From Salon

The samples were rejected as they needed to be airtight so they could retain vapour from any potential accelerant used, he added.

From BBC

She doesn’t know her assistant spies for the rebellion; evil empires are never airtight.

From Salon

Store in an airtight container for up to 3 days.

From Salon

If you’re making a larger batch, peel the eggs once they’ve cooled and store them in an airtight container in the fridge.

From Salon

Related Words

• indisputable 
• invulnerable 
• irrefutable 
• unassailable