as in waterproof
unable to be penetrated by water because of construction or treated material
the campers stayed dry in their leakproof tents
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Recent Examples of leakproof
Creating a leakproof barrier for your backpack, a rain cover is absolutely essential for blocking the rain from seeping in and soaking your trail snacks, electronic devices, and extra layers.
—
Olivia Young, Travel + Leisure, 20 Apr. 2026
Or, for those tired of uncomfortable pads and tampons, now’s the time to try out Knix’s leakproof period underwear.
—Izzy Baskette, PEOPLE, 17 Apr. 2026
Packaged in a keepsake box for instant gifting, this kit also includes a leakproof tumbler (new moms need to stay hydrated), mini waterproof pouch, and a carryall for moms on the move.
—Pamela Brill, Parents, 7 Apr. 2026
Stop spills in their tracks by placing liquids in leakproof containers—even a Ziploc bag will do the trick in a pinch!
—Hannah Chubb, Condé Nast Traveler, 4 Apr. 2026
Tekton bonds the body together into a seamless, self-supporting monocoque optimized for thermal and leakproof integrity.
—New Atlas, 4 Mar. 2026
Similar to its other products, this one has a leakproof lid, closeable straw cap, and wide mouth for easy drinking.
—Outside, 5 Feb. 2026
It’s made from triple-layer stainless steel, has a leakproof lid, and comes with a dual straw and sip lid.
—Alicia Geigel, Southern Living, 29 Jan. 2026
The team revealed that to achieve leakproof liquid and vapor containment, in addition to adequate insulation and support, the DUNE cryostats are composed of several layers.
—Prabhat Ranjan Mishra, Interesting Engineering, 15 Jan. 2026
Olivia Young, Travel + Leisure, 20 Apr. 2026
Or, for those tired of uncomfortable pads and tampons, now’s the time to try out Knix’s leakproof period underwear.
—Izzy Baskette, PEOPLE, 17 Apr. 2026
Packaged in a keepsake box for instant gifting, this kit also includes a leakproof tumbler (new moms need to stay hydrated), mini waterproof pouch, and a carryall for moms on the move.
—Pamela Brill, Parents, 7 Apr. 2026
Stop spills in their tracks by placing liquids in leakproof containers—even a Ziploc bag will do the trick in a pinch!
—Hannah Chubb, Condé Nast Traveler, 4 Apr. 2026
Tekton bonds the body together into a seamless, self-supporting monocoque optimized for thermal and leakproof integrity.
—New Atlas, 4 Mar. 2026
Similar to its other products, this one has a leakproof lid, closeable straw cap, and wide mouth for easy drinking.
—Outside, 5 Feb. 2026
It’s made from triple-layer stainless steel, has a leakproof lid, and comes with a dual straw and sip lid.
—Alicia Geigel, Southern Living, 29 Jan. 2026
The team revealed that to achieve leakproof liquid and vapor containment, in addition to adequate insulation and support, the DUNE cryostats are composed of several layers.
—Prabhat Ranjan Mishra, Interesting Engineering, 15 Jan. 2026
Recent Examples of Synonyms for leakproof
Adjective
-
Store it along with essential documents like IDs, insurance papers, medical records and property deeds in a waterproof, fire-resistant container or safe.—
Brandi D. Addison,
USA Today,
1 May 2026
-
For additional sources of light, pack candles, a battery or solar lantern, and waterproof lighters.—
Louise Parks,
Martha Stewart,
1 May 2026
Adjective
-
Yet when the topic of coach David Adelman came up, Jokic did offer up a staunch opinion.—
Bennett Durando,
Denver Post,
1 May 2026
-
His stances, often unpopular with other billionaires, have earned him staunch support from some and persistent skepticism from others.—
Sophie Austin,
Fortune,
29 Apr. 2026
Cite this Entry
“Leakproof.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/leakproof. Accessed 7 May. 2026.
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