AIRTIGHT Synonyms: 124 Similar and Opposite Words

airtight

adjective

Definition of airtight

as in watertight

Related Words

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Dissimilar Words

as in bulletproof

Related Words

Dissimilar Words

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of airtight Natural corks, while not entirely airtight, typically allow only a minimal amount of oxygen to enter over time. — Roger Dooley, Forbes, 12 Dec. 2024 These passed our leak test, but our avocado browned quite a bit overnight, suggesting that these containers aren’t entirely airtight. — Lizzy Briskin, Peoplemag, 9 Sep. 2024 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 But the United States' employment verification scheme is hardly airtight. — Edward Alden, Foreign Affairs, 11 Feb. 2013 See All Example Sentences for airtight

Recent Examples of Synonyms for airtight

Adjective

For now, access appears limited to the steadily expanding group of organizations granted access to Claude Mythos Preview through Anthropic’s — not entirely watertight — private Project Glasswing initiative.

— Robert Hart, The Verge, 9 June 2026
Tunnels are also not truly watertight, requiring drainage measures like sump pumps and creating maintenance and reliability issues, the group advised.

— Skyler Swisher, The Orlando Sentinel, 15 Feb. 2026

Definition of watertight

Adjective

The Spurs are almost as bulletproof as Oklahoma City on that end of the floor, but the Thunder have a bit more versatility and are more seasoned.

— James L. Edwards III, New York Times, 27 May 2026
Later grants were used to install bulletproof glass around a playground near the street, as well as bulletproof glass in other classroom windows.

— Jeff McDonald, San Diego Union-Tribune, 25 May 2026

Definition of bulletproof

Adjective

Impossible than to the hermetic paranoia of Gary Oldman in Tinker Tailor Soldier Spy.

— Scott Tobias, Vulture, 21 Oct. 2026
O’Neill, a physics professor at Princeton, argued for the practical possibility of building human habitats that would float between Earth and the moon, housing tens of thousands of people in hermetic environments with earthlike gravity and climate.

— Jacob Weisberg, Vanity Fair, 10 Sep. 2026

Definition of hermetic

Adjective

On Tuesday, Elon Musk, the CEO and largest shareholder of both companies, said the electric vehicle maker and the rocket company had formed special committees at the request of shareholders to discuss the idea.

— Miranda Jeyaretnam, Time, 21 Oct. 2026
For the collection, the mill applies a special cleaning process to cotton that removes 80 percent of impurities.

— Angela Velasquez, Footwear News, 21 Oct. 2026

Definition of special

Adjective

Between these and all the various high-grade resistors and capacitors, the ZM3 is built to deliver exceptional sound.

— New Atlas, New Atlas, 19 Oct. 2026
NexGen is constructing a large high-grade uranium mine and mill in Canada under its Rook I Project, which is expected to be completed by 2030.

— Liz Napolitano, CNBC, 21 Sep. 2026

Definition of high-grade

Adjective

The world building is easier to understand and less dense than Crescent City, and the tone is also the most indicative of SJM’s writing on the whole; Throne of Glass started as a YA series, then becomes more adult over time.

— Anna Moeslein, Glamour, 24 Oct. 2026
The mollusks can form dense colonies that clog pipes, obstruct water flow and foul boat motors.

— Daniel Hunt, Sacbee.com, 23 Oct. 2026

Definition of dense

Browse Nearby Words

air taxis

airtight

airway

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Style

“Airtight.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/airtight. Accessed 29 Oct. 2026.

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Synonyms of airtight

adjective

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