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

Example Sentences

Store the food in an airtight container. The defendant had an airtight alibi.
Recent Examples on the Web 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 Store tightly wrapped or in an airtight container at room temperature for up to 1 day, or in the refrigerator for up to 2 days. Charlotte Druckman, WSJ, 1 Feb. 2023 The hopper features an airtight lid and UV-blocking tint, both of which help preserve the freshness of the coffee beans. Jamie Kim, Good Housekeeping, 14 Dec. 2022 To store your cranberries, place them in a container with an airtight lid and a layer of rice in the bottom to absorb moisture. USA TODAY, 3 Dec. 2022 It's designed to combat odors, locking them in with its airtight lid. Kathleen Willcox, Popular Mechanics, 28 May 2022 Reserve the rest in an airtight container in your fridge, for up to a week. Karla Alindahao, Forbes, 24 Jan. 2023 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'airtight.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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 25 Mar. 2023.

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

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