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
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
This stainless steel version from Bakpoco is leakproof, with a transparent, food-grade silicone lid that is BPA-, lead-, and plastic-free, and easy to clean, too.
—Alesandra Dubin, Travel + Leisure, 20 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
Its pairs come in easy hipster and bikini cuts in plenty of approachable colors and prints, as well as leakproof undies that can make navigating a first period or heavier cycle more comfortable.
—Malia Griggs, Glamour, 12 Dec. 2025
Rambler 26-ounce Bottle More than 1,000 Amazon shoppers have already purchased this Yeti water bottle, fully equipped with an easy-carrying handle and leakproof straw cap for sipping on the go.
—Mia Huelsbeck, PEOPLE, 29 Nov. 2025
Its lid is leakproof and features a convenient carrying handle.
—Bestreviews, Mercury News, 29 Nov. 2025
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
This stainless steel version from Bakpoco is leakproof, with a transparent, food-grade silicone lid that is BPA-, lead-, and plastic-free, and easy to clean, too.
—Alesandra Dubin, Travel + Leisure, 20 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
Its pairs come in easy hipster and bikini cuts in plenty of approachable colors and prints, as well as leakproof undies that can make navigating a first period or heavier cycle more comfortable.
—Malia Griggs, Glamour, 12 Dec. 2025
Rambler 26-ounce Bottle More than 1,000 Amazon shoppers have already purchased this Yeti water bottle, fully equipped with an easy-carrying handle and leakproof straw cap for sipping on the go.
—Mia Huelsbeck, PEOPLE, 29 Nov. 2025
Its lid is leakproof and features a convenient carrying handle.
—Bestreviews, Mercury News, 29 Nov. 2025
Recent Examples of Synonyms for leakproof
Adjective
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Burberry can be credited with making the waterproof coat something of a fashion symbol (Hollywood also helped with films like Casablanca), and other designers have followed suit in the century-plus since.—
Lane Nieset,
Travel + Leisure,
7 Feb. 2026
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The brand describes the Konos sneaker as being a waterproof, lightweight road-to-trail shoe that features its underfoot system that provides advanced cushioning, stability and traction.—
Jaden Thompson,
Footwear News,
6 Feb. 2026
Adjective
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Last week, Sanders — the longtime Vermont independent and staunch critic of the Republican president — called for a permanent cap of 15% on credit card rates.—
Morgan Chittum,
CNBC,
13 Feb. 2026
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CrossFit, the high-intensity gym begun by the staunch libertarian Greg Glassman, went from 13 gyms in 2005 to 13,000 in 2016.—
Annie Levin,
Washington Post,
10 Feb. 2026
Cite this Entry
“Leakproof.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/leakproof. Accessed 14 Feb. 2026.
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