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 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
The tumbler’s leakproof lid also rotates for three comfortable sipping positions.
—Sian Babish, PEOPLE, 9 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
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
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
The tumbler’s leakproof lid also rotates for three comfortable sipping positions.
—Sian Babish, PEOPLE, 9 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
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
Recent Examples of Synonyms for leakproof
Adjective
-
Plus, the waterproof design can handle pool splashes, beach trips, and accidental spills without missing a beat.—
Toni Sutton,
PEOPLE,
16 May 2026
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Check out the lightweight Maelstrom backpack that comes with a water bladder for just $30 or the Campros waterproof camping tent that fits up to six people for only $64.—
Erin Cavoto,
Travel + Leisure,
16 May 2026
Adjective
-
Rubio is a staunch Catholic, while Hegseth, Johnson, Carson, and Scott identify as evangelical Christians.—
Emily Hallas,
The Washington Examiner,
15 May 2026
-
That acknowledgement sparked an onslaught of questions that will likely rest on when Hoskins, a Republican and staunch supporter of the map, decides whether the campaign can reach the ballot.—
Kacen Bayless,
Kansas City Star,
14 May 2026
Cite this Entry
“Leakproof.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/leakproof. Accessed 22 May. 2026.
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