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
My favorite design detail is the wicker on the chairs, which is made out of PE—short for polyethylene, a durable plastic—that is not only waterproof, but treated to protect against damage from UV rays. Quincy Bulin, Better Homes & Gardens, 11 May 2026 Best of all, Mom can read in any light, both indoors and out, and even read in the bath or poolside thanks to its waterproof design. Bestreviews, Chicago Tribune, 11 May 2026
Noun
Helly Hansen employs some of its proprietary waterproof and breathable materials, including PrimaLoft Black Eco insulation, a PFC-free DWR treatment, and various ventilation options. Nathan Allen, Travel + Leisure, 14 Nov. 2025 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 See All Example Sentences for waterproof
Recent Examples of Synonyms for waterproof
Adjective
  • The tumbler’s leakproof lid also rotates for three comfortable sipping positions.
    Sian Babish, PEOPLE, 9 May 2026
  • 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
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
  • 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
Noun
  • When she was spotted outside near Sandringham House walking her dog in 2008, the then-Duchess of Cornwall wore a navy blue raincoat with matching boots and a pair of black pants.
    Joyann Jeffrey, PEOPLE, 10 May 2026
  • From trench coats to lightweight raincoats and cool bombers, shoppers will find funnel necks among collections from brands like Mango, Zara, Good American, COS and beyond.
    ABC News, ABC News, 1 May 2026
Noun
  • Rocky, meanwhile, wore a camel trench over a gray tee, along with black jeans and combat boots.
    Toria Sheffield, PEOPLE, 17 May 2026
  • In the massive world of the NFL trenches, the domain of the largest of all professional athletes, Aaron Donald was an undersized anomaly.
    Encyclopedia Britannica, Encyclopedia Britannica, 15 May 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 17 May. 2026.

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