waterproof

adjective
wa·​ter·​proof | \ ˈwȯ-tər-ˌprüf How to pronounce waterproof (audio) , ˈwä-\

Definition of waterproof

 (Entry 1 of 3)

: impervious to water especially : covered or treated with a material (such as a solution of rubber) to prevent permeation by water

waterproof

noun

Definition of waterproof (Entry 2 of 3)

1 : a waterproof fabric
2 chiefly British : raincoat

waterproof

verb
waterproofed; waterproofing; waterproofs

Definition of waterproof (Entry 3 of 3)

transitive verb

: to make waterproof

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Other Words from waterproof

Adjective

waterproofness noun

Verb

waterproofer noun

Synonyms for waterproof

Synonyms: Adjective

leakproof, waterproofed

Synonyms: Noun

mac (or mack) [British], mackintosh (also macintosh) [chiefly British], oilskin, raincoat, slicker

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Examples of waterproof in a Sentence

Adjective

This suntan lotion is waterproof. luckily, my backpack is waterproof, so my clothes didn't get wet

Noun

remember your waterproof if you're walking around London in the winter

Verb

He waterproofed the deck by applying sealer to it.
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Recent Examples on the Web: Adjective

Disney World offers a waterproof MagicBand wristband that has an RFID chip in it. David Kravets, Ars Technica, "How the NFL—not the NSA—is impacting data gathering well beyond the gridiron," 1 Sep. 2019 Set up camp in your (or your best friend’s) backyard with Bell’s waterproof cotton canvas glamping tent. Chicago Tribune Staff, chicagotribune.com, "It’s not over yet — here are 25 things you should do in Chicago before the end of summer," 29 Aug. 2019 Gone are the days of Princess Grace and Jackie O gliding down the mountain at Gstaad wearing designer sunglasses, cashmere turtlenecks underneath chunky wool cable knits, and slim, flattering waterproof trousers. Brooke Bobb, Vogue, "This Designer-Backed Women’s Ski Collection Will Actually Get You Excited For Winter," 29 Aug. 2019 The waterproof interior is roomy and comfortable, the controls an exercise in minimalism. Eric Adams, WIRED, "VW Revives the Classic Dune Buggy as an All-Electric Blast," 17 Aug. 2019 Outside the station, Jonathan Raulino emerges from beneath a waterproof tarp on the sidewalk and rubs his eyes, bewildered at the start of a new day. Deanna Pan, BostonGlobe.com, "A day at South Station: A gateway to Boston, an intersection of many different lives," 17 Aug. 2019 The outer fabric, waterproof membrane, lining and insulation that are all made from recycled materials (zippers, pull-tabs and labels are the only components that are not recycled). Los Angeles Times, "A plant-based running shoe? Outdoor gear that’s kind to the planet," 8 Aug. 2019 The waterproof Kindle can be be used pool- or tub-side without fear of damage due to an accidental dunk. Emily Price, Condé Nast Traveler, "9 Small Tech Accessories Worth Adding to Your Packing List," 7 Aug. 2019 Use waterproof cosmetics or any eye makeup product that claims to last a long time. Maya Allen, Marie Claire, "Will Eyelash Extensions Ruin Your Natural Lashes? We Investigate," 31 July 2019

Recent Examples on the Web: Noun

Anker Soundcore SoundBuds wireless earbuds - IPX7 waterproof for $21.99 at Amazon (clip $4 coupon - normally $25.99). iPhone XR (64GB, blue, unlocked) for $699.99 at Google Express (use code: PHONETECHBTS19 - normally $749.99). Ars Staff, Ars Technica, "Dealmaster: Save $60 on CalDigit’s TS3 Plus, our favorite Thunderbolt 3 dock," 1 Aug. 2019 Then façade plaster and paint are layered on enough times to make the stage waterproof for a year—though Urstadt says regardless, regular maintenance has to be done. Jennifer Billock, Smithsonian, "There’s a Massive Jester Floating on Austria’s Lake Constance," 15 July 2019 The exterior material, something Yeti calls DryHide, is waterproof, UV and puncture resistant, and easy to clean. Bradley Ford, Popular Mechanics, "The Best Soft Coolers for Any Outing," 25 June 2019 The voting machines were protected inside waterproof boxes and other polling material was kept dry under layers of plastic cover. Amrit Dhillon, The Seattle Times, "Poll workers journey to reach India’s most remote voters," 14 Apr. 2019 At L’ovue, a big, airy space just a block away, Kim hurries over to a row of waterproof mascaras and selects her favorite by the Japanese label Kiss Me. Kate Branch, Vogue, "This Fantastic Beasts 2 Star Has a Serious Knack for K-Beauty," 17 Nov. 2018 The company is evaluating a cup made by U.K. startup Frugalpac, which says the inclusion of an easy-to-separate waterproof lining means the cup can be processed by regular recycling facilities. Saabira Chaudhuri, WSJ, "A New Target in the Fight Against Plastic: Paper Cups," 30 Oct. 2018 Lifeactiv gives you 10,000-mAh battery power in a slim case that’s dropproof, waterproof, and dustproof. Graham Averill, Outside Online, "Emergency Gear that Should Live in Your Daypack," 9 July 2018 Brings back great memories - a young boy - being a boy - keep up the awesome work Jessica — michael ferrari (@idesign_mcs) June 27, 2018 Other folks were actually more impressed by Ace's waterproof cast. Lisa Gutierrez, kansascity, "Jessica Simpson's 4-year-old goes flying through the air in pool video. Moms freak out," 27 June 2018

Recent Examples on the Web: Verb

Those employees will make sure entry doors are waterproofed, move furniture from windows and respond to any other issues caused by the storm. Matthew J. Palm, orlandosentinel.com, "Dr. Phillips Center crane will ride out Hurricane Dorian with the wind," 31 Aug. 2019 But many other places also face substantial risk, and almost all of them are far less able to waterproof themselves than the Dutch. The Economist, "Climate change is a remorseless threat to the world’s coasts," 17 Aug. 2019 The wall will be waterproofed and new brick will be installed. Erika Butler, baltimoresun.com, "$29 million renovation of Joppatowne High to begin next summer after Harford school board approves plans, design," 13 Aug. 2019 Seal walls in basements with waterproofing compounds to avoid seepage. National Geographic, "Flood safety tips," 23 July 2019 The animal chutes blocked the escape as the oil and wax that had been used to waterproof the tent caught fire and turned the big top into a raging inferno. Steven Goode, courant.com, "His mother died saving his life during the Hartford Circus Fire, but Jerry LeVasseur turned a catastrophe into a lifetime of opportunity," 6 July 2019 The blaze spread quickly, fueled by a mixture of gasoline and paraffin wax that was used to waterproof the tent. USA TODAY, "Women in baseball, Lynyrd Skynyrd, circus fire: News from around our 50 states," 1 July 2019 Decades of widespread use of PFAS for everything from waterproofing clothes to firefighting foam has made the exposure global: Health issues arising from PFAS are estimated to cost Europe 50 billion euros per year. Zoë Schlanger, Quartz, "3M has long known it was contaminating the US food supply," 13 June 2019 New seats are part of a $10 million update at Arrowhead Stadium that will include a re-application of waterproofing measures to the entire upper deck and an update to the Arrowvision scoreboard. Pete Grathoff, kansascity, "Here’s a look at the new seats in upper deck at Arrowhead Stadium," 4 June 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'waterproof.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of waterproof

Adjective

1725, in the meaning defined above

Noun

1788, in the meaning defined at sense 1

Verb

1820, in the meaning defined above

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Statistics for waterproof

Last Updated

6 Sep 2019

Look-up Popularity

Time Traveler for waterproof

The first known use of waterproof was in 1725

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More Definitions for waterproof

waterproof

adjective

English Language Learners Definition of waterproof

 (Entry 1 of 2)

: designed to prevent water from entering or passing through
: designed so that water alone will not remove it

waterproof

verb

English Language Learners Definition of waterproof (Entry 2 of 2)

: to put a substance on (something) in order to make it waterproof

waterproof

adjective
wa·​ter·​proof | \ ˌwȯ-tər-ˈprüf How to pronounce waterproof (audio) , ˌwä-\

Kids Definition of waterproof

 (Entry 1 of 2)

: not letting water through a waterproof tent

waterproof

verb
waterproofed; waterproofing

Kids Definition of waterproof (Entry 2 of 2)

: to make something resistant to letting water through

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Comments on waterproof

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