air·​tight ˈer-ˌtīt How to pronounce airtight (audio)
: impermeable to air or nearly so
an airtight seal
: having no noticeable weakness, flaw, or loophole
an airtight argument
: permitting no opportunity for an opponent to score
an airtight defense
airtightness noun

Examples of airtight in a Sentence

Store the food in an airtight container. The defendant had an airtight alibi.
Recent Examples on the Web Their defense is hardly airtight, but the schedule — the full schedule, not just the conference lineup — is largely devoid of teams capable of slowing the Cowboys’ attack. Jon Wilner, The Mercury News, 15 May 2024 The band was absolutely airtight, with drummer Daru Jones, bassist Dominic John Davis and keyboardist Quincy McCrary matching White’s on-stage improvisation to a tee. Ellise Shafer, Variety, 15 Jan. 2023 Transfer to an airtight container and set aside immediately. Nereya Otieno, Rolling Stone, 4 Feb. 2023 Each comes with an airtight lid and features a secure grip for easy pouring, whisking, or mixing. Lindsay Tigar, Peoplemag, 3 Feb. 2023 See all Example Sentences for airtight 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'airtight.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1728, in the meaning defined at sense 1

Time Traveler
The first known use of airtight was in 1728

Dictionary Entries Near airtight

Cite this Entry

“Airtight.” Dictionary, Merriam-Webster, Accessed 15 Jun. 2024.

Kids Definition


air·​tight -ˈtīt How to pronounce airtight (audio)
: so tightly sealed that no air can get in or out
an airtight container
: too strong or effective to fail or be defeated
an airtight argument

More from Merriam-Webster on airtight

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!