waterproof 1 of 2

Definition of waterproofnext
as in leakproof
made of or treated with material that does not allow water to penetrate luckily, my backpack is waterproof, so my clothes didn't get wet

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waterproof

2 of 2

noun

chiefly British
as in slicker
a coat made of water-resistant material remember your waterproof if you're walking around London in the winter

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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 waterproof
Adjective
In the cold, wear at least three layers on the top half of your body and at least two layers of bottoms, plus gloves, a face mask and waterproof boots, according to the National Weather Service. Melina Khan, USA Today, 22 Jan. 2026 These under-$20 ski gloves are waterproof, windproof, and suited for temperatures as low as -22 degrees Fahrenheit, thanks to their thermal fleece interior, durable TPU exterior, and adjustable wrist buckle that can be tightened to lock in heat. Amelia McBride, Travel + Leisure, 21 Jan. 2026
Noun
There’s a lot to love, from the waterproof, stretchy three-layer softshell outer fabric to the generous kangaroo pocket and the brilliant dropseat design that makes bathroom breaks easy. Jenny Wiegand, Outside, 14 Nov. 2025 The waterproof, gel-like formula uses film-forming silicones and waxes to create a flexible yet budge-proof seal that locks pigment in place. Christa Joanna Lee, Allure, 11 Nov. 2025 See All Example Sentences for waterproof
Recent Examples of Synonyms for waterproof
Adjective
  • 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
  • Beyond the stainless steel interior, the tumbler features a side handle for easy carrying and a leakproof lid with both a sip opening and a straw opening (with a reusable straw) to chug on the go.
    Alicia Geigel, Southern Living, 19 Jan. 2026
Noun
  • City slickers will definitely get a bang for their buck with this place, which is a lot more spacious than a shoebox on the Upper East Side.
    Madeleine Marr, Miami Herald, 17 Nov. 2025
  • During the Waleses' trip to Canada in October 1991, Diana made time between touring an AIDS hospice and a women's shelter to join William, 9, and Harry, 7, on a visit to Niagara Falls, where the trio donned rain slickers for a wet and wild voyage on the Maid of the Mist.
    Stephanie Sengwe, People.com, 31 Aug. 2025
Adjective
  • Board member Allen Zeman, one of the staunchest advocates for closing schools, was not persuaded.
    Scott Travis, Sun Sentinel, 22 Jan. 2026
  • Um, my mom was my staunchest defender.
    Outside Online, Outside Online, 21 Jan. 2026
Noun
  • But while British sleuths wear raincoats or umbrellas, Erica is more suited for a beautiful French scarf.
    Georg Szalai, HollywoodReporter, 19 Jan. 2026
  • Nylon raincoats can go longer, perhaps once a month or every two months, depending on the frequency of use.
    Mary Marlowe Leverette, The Spruce, 14 Jan. 2026
Noun
  • Team Veronica di Piante’s suit with Toteme’s red trench—a chic alternative to the camel trench, which reads just as timeless.
    Andrea Zendejas, Vogue, 22 Jan. 2026
  • Something like the Quince Cashmere-wool Classic Coat (or my favorite Buck Mason Wool Blanket Coat) will keep you warm while still delivering the same style points as a trench.
    Kristine Thomason, Travel + Leisure, 22 Jan. 2026
Noun
  • Mary Jane eventually found her muck boots and an oilskin jacket in the back of the hallway closet.
    Kate Walbert, The New Yorker, 29 Nov. 2021
  • The jean were presented alongside a collection of classic workwear with Japanese vintage details, and oilskin coat inspired by one of creative director Maria Heilmann’s vintage pieces, and handknitted pieces crafted from undyed llama.
    Angela Velasquez, Sourcing Journal, 3 Sep. 2019

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Cite this Entry

“Waterproof.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/waterproof. Accessed 27 Jan. 2026.

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