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airtight

airtight

16 3.9
Completely closed so no air can get in or out
  • adjective
  • /ˈɛrtaɪt/
: hermético
  • It was built to be almost entirely airtight in case of fire.
  • an airtight container
  • an airtight bag
  • an airtight seal

It's so satisfying cutting these packages that are airtight because I don't know, they just like explode.

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Examples

  • Press the plate topper down on a plate, and an airtight seal is instantly created.

    Blog text (9)
  • I tape it down in multiple spots and then I tape it down again to create an airtight envelope.

  • What I need is an airtight case.

  • We need an airtight case.

  • The whole process, from start to finish, is subject to an airtight security system.

  • And the room is airtight.

  • Each one of these holds is airtight when it's sealed.

  • Your room, Stryker, is completely airtight.

  • Once basil is dried, store it in an airtight container in a cool, dark cupboard.

    Blog text (23)
  • To keep the cookies fresh, store them in an airtight container.

Synonyms

sealed
vsairtight
140 2.5

Closed and covered to stop water or air getting in

refers specifically to blocking air or gas rather than general closure
air-tight
vsairtight
5 3.0

Completely sealed so no air can get in or out

is spelled without a hyphen but keeps the same meaning
hermetic
vsairtight
4 8.9

Completely closed so no air or water can get in

means sealed against air or gas but not necessarily against other effects
leakproof
vsairtight
1 3.2

Not letting liquid or gas escape from a container

focuses specifically on blocking air or gas not liquids
gas-tight
vsairtight
1 5.8

Completely closed so no gas can get in or out

has identical meaning but is the more common form

Antonyms

35 1.5

Allowing liquid or gas to escape through holes and cracks

4 5.8

A material that lets water or air pass through it

Compounds

1 3.2

A bag that keeps air from entering or leaving to protect what is inside

A set of reasons that cannot be shown wrong

How Airtight

airtight
16 3.9
sealed
140 2.5
leaky
35 1.5
permeable
4 5.8
porous
22 4.6

Surface Forms

airtight positive

Morphology

airtight = air + tight (transparent) = air + tight

Direct compound of 'air' + 'tight' meaning sealed against air; the meaning is directly derivable from its parts.

Etymology

Airtight is simply air ('air') + tight ('closed' or 'secure'), so it literally means 'closed against air'. That's why an airtight container will not let air in or out and keeps food fresh.