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
The tumbler’s leakproof lid also rotates for three comfortable sipping positions.
—
Sian Babish, PEOPLE, 3 June 2026
LifeStraw’s redesigned Peak Series Straw features a durable, leakproof design that’s great for backcountry treks.
—Sheena Vasani, The Verge, 22 May 2026
The leakproof silicone design is the real selling point here because nobody wants to open their suitcase to discover conditioner exploded everywhere mid-flight.
—Chaise Sanders, Travel + Leisure, 19 May 2026
The leakproof water tank lid is easily opened by pulling up on its bottom edge.
—Bestreviews, Mercury News, 13 May 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
Sian Babish, PEOPLE, 3 June 2026
LifeStraw’s redesigned Peak Series Straw features a durable, leakproof design that’s great for backcountry treks.
—Sheena Vasani, The Verge, 22 May 2026
The leakproof silicone design is the real selling point here because nobody wants to open their suitcase to discover conditioner exploded everywhere mid-flight.
—Chaise Sanders, Travel + Leisure, 19 May 2026
The leakproof water tank lid is easily opened by pulling up on its bottom edge.
—Bestreviews, Mercury News, 13 May 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
Recent Examples of Synonyms for leakproof
Adjective
-
Fast forward to May 30 – 31 2026, when the Scuba Show, North America’s largest consumer scuba expo, presents the latest waterproof watches, dive watches and dive computers (which also tell the time and are worn on the wrist) in the Long Beach Convention Center, in Long Beach, California.—
Kyle Roderick,
Forbes.com,
30 May 2026
-
Discard Old Water Start by putting on a pair of waterproof gloves to protect your hands when cleaning.—
Madeline Buiano,
Martha Stewart,
29 May 2026
Adjective
-
Palace’s defence, so staunch for much of this campaign, snuffed out any serious danger.—
Matt Woosnam,
New York Times,
28 May 2026
-
But the Veterans Park Neighborhood Association, staunch opponents of the shelter location, went to court in December over the city’s previous decision.—
Idaho Statesman,
Idaho Statesman,
28 May 2026
Cite this Entry
“Leakproof.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/leakproof. Accessed 5 Jun. 2026.
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