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airtight

airtight

19 3.9
Completely closed so no air can get in or out
  • adjective
  • /ˈɛrtaɪt/
translation icon : 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

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
air-tight
vsairtight
1 3.0

Completely sealed so no air can get in or out

is spelled without a hyphen but keeps the same meaning
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
leakproof
vsairtight
1 3.2

Not letting liquid or gas escape from a container

focuses specifically on blocking air or gas not liquids
sealed
vsairtight
2.5

Closed and covered to stop water or air getting in

refers specifically to blocking air or gas rather than general closure

Antonyms

26 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

A set of reasons that cannot be shown wrong

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

How Airtight

airtight
19 3.9
sealed
2.5
leaky
26 1.5
permeable
4 5.8
porous
23 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.