waterproof

adjective wa·ter·proof \ ˈwȯ-tər-ˌprüf , ˈwä- \

Updated on: 19 May 2018

Definition of waterproof

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

—

waterproofness

noun

See waterproof defined for English-language learners

See waterproof defined for kids

Examples of waterproof in a Sentence

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

Recent Examples of waterproof from the Web

And the effect lasts all day — the formula is waterproof and wears without flaking or smudging up onto your lids.

— elizabeth siegel, Allure, "The June 2018 Allure x Kat Von D Beauty Box: See All the Product Samples You'll Get This Month," 14 May 2018
Shop all our favorite waterproof makeup products below, just in time for summer.

— harper's bazaar staff, Harper's BAZAAR, "We Asked The Women of Miami About Their Beauty Routines," 8 May 2018
For all the primers, finishing sprays, and waterproof formulas out there, the Teflon technique comes down to thin layers and basic science.

— rachel nussbaum, Glamour, "I Asked Beyoncé's Makeup Artist to Give Me Her 'Teflon Face'," 3 May 2018
Be sure to bring moisture-wicking base layers, an insulating layer and a waterproof outer layer to keep you dry and cozy.

— bailey berg, Anchorage Daily News, "Tips for exploring Alaska’s wilderness trails," 2 May 2018
NYX Gotcha Covered Concealer This product claims to be waterproof and full coverage.

— victoria rodriguez, Seventeen, "11 Waterproof Makeup Products You Have to Try," 20 Apr. 2018
The watch itself is powered by the automatic caliber 4130 and is waterproof up to 100 meters/330 feet.

— Bloomberg.com, "Hands-On With the Most Extreme New Rolex Available Today," 27 Apr. 2018
Because Love Park sits on top of an 800-car parking garage, its entire surface had to be ripped out so a new waterproof membrane could be installed.

— inga saffron, Philly.com, "Love Park was supposed to be the People's Park. How did it end up as a granite Sahara?," 26 Apr. 2018
Among other features, the new Spectacles are waterproof and shoot photos as well as videos of higher quality.

— georgia wells, WSJ, "Snap Tries Again With High-Tech Specs," 26 Apr. 2018

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.

First Known Use of waterproof

1725

in the meaning defined above

See Words from the same year

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waterproof Synonyms

waterproof

noun

Definition of waterproof

1 : a waterproof fabric

2 chiefly British : raincoat

See waterproof defined for English-language learners

Examples of waterproof in a Sentence

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

Recent Examples of waterproof from the Web

Try a waterproof, smudge-free option like Covergirl Lashblast Volume Mascara.

— Woman's Day, "7 Fun in the Sun Essentials," 29 Aug. 2014
To find Jesse, rescuers turned to technology, hoping sophisticated waterproof cameras used to inspect the city’s drainage system would provide a glimpse of the missing boy.

— cleve r. wootson jr., Washington Post, "Rescuers find boy 12 hours after he was washed away in a ‘maze’ of drainage pipes," 2 Apr. 2018
These days, there are lots of very good $500 technical waterproof-breathable shells.

— jakob schiller, Outside Online, "Picture's Stretchy, Breathable Iceland Proknit Shell," 21 Mar. 2018
According to the brand, the formula is sweatproof, waterproof, and transfer-proof — in other words, it's designed to stay on all damn day.

— macaela mackenzie, Allure, "Cover FX's New Power Play Foundation Offers Dewy Coverage to Oily Skin Types," 14 Mar. 2018
And their latest launch, a waterproof and sweat-proof foundation called Power Play, claims to be the brand’s most longwear formula yet.

— avery matera, Teen Vogue, "Cover FX Is Launching New Power Play Foundation," 7 Mar. 2018
The waterproof bands can even be worn at the resort's water parks and pools.

— arthur levine, USA TODAY, "Disney parks tech upgrades make visiting more convenient," 27 Feb. 2018
The cargo area had grocery bag and tie-down hooks, a retractable/removable shade-type cover, and a removable waterproof/washable cargo tray.

— emma jayne williams, star-telegram, "Subaru’s redesigned 2018 Crosstrek compact SUV adds space, technology | Fort Worth Star-Telegram," 24 Feb. 2018
Blooms of Akashiwo sanguinea algae can also disrupt the protective waterproof coating on birds.

— mika mckinnon, Smithsonian, "Sea Foam Delights Visitors of Lebanese Beach," 31 Jan. 2018

First Known Use of waterproof

1788

in the meaning defined at sense 1

See Words from the same year

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waterproof

verb

Definition of waterproof

transitive verb

: to make waterproof

—

waterproofer

noun

See waterproof defined for English-language learners

Examples of waterproof in a Sentence

He waterproofed the deck by applying sealer to it.

Recent Examples of waterproof from the Web

But before calling a basement waterproofing contractor, try other remedies.

— kevin brasler, Philly.com, "Solve a wet basement by fixing the problem, not managing it," 1 May 2018
Seam-Tape Failure Seam sealing is an amazing process used to waterproof the tiny stitch holes in a jacket.

— joe jackson, Outside Online, "How to Tell When to Retire That Rain Shell," 30 Apr. 2018
The building, built around 1920, has TV security and intercom systems, and in recent years its facade was steam-cleaned, repointed and waterproofed.

— rosalie r. radomsky, New York Times, "Recent Commercial Real Estate Transactions," 6 Feb. 2018
Kenny’s girlfriend, Sylvia Alba, helped waterproof all of his gear.

— anthony gulizia, BostonGlobe.com, "Runners went to their bag of tricks to beat the elements," 16 Apr. 2018
Crews will remove and replace the asphalt pavement, waterproofing membrane and joints on the bridge.

— joe marusak, charlotteobserver, "Iconic stretch of Blue Ridge Parkway closing for months | Charlotte Observer," 8 Feb. 2018
Stairwells and entryways need to be enlarged, flood-prone openings need to be waterproofed, ventilation plants need to be rebuilt.

— jonathan mahler, New York Times, "The Case for the Subway," 3 Jan. 2018
Construction Resources' recommendations included: Cleaning and waterproofing the masonry.

— bob sandrick, cleveland.com, "Strongsville's landmark clock tower needs repairs; city officials mum on when that might happen," 12 Dec. 2017
This behavior helps keep air spaces in their warm undercoat and works in oil from their anal glands to waterproof their outer fur.

— National Geographic, "Beavers Have Vanilla-Scented Butts and More Odd Facts," 9 Dec. 2017

First Known Use of waterproof

1820

in the meaning defined above

See Words from the same year

NEW! Time Traveler

WATERPROOF Defined for English Language Learners

waterproof

adjective

Definition of waterproof for English Language Learners

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

waterproof

verb

Definition of waterproof for English Language Learners

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

WATERPROOF Defined for Kids

waterproof

adjective wa·ter·proof \ ˌwȯ-tər-ˈprüf , ˌwä- \

Definition of waterproof for Students

: not letting water through

a waterproof tent

waterproof

verb

Definition of waterproof for Students

waterproofed; waterproofing

: to make something resistant to letting water through

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See words that rhyme with waterproof Thesaurus: All synonyms and antonyms for waterproof Spanish Central: Translation of waterproof Nglish: Translation of waterproof for Spanish speakers Britannica English: Translation of waterproof for Arabic speakers

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waterproof

Definition of waterproof

waterproofness

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waterproof

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waterproof

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waterproofer

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WATERPROOF Defined for English Language Learners

waterproof

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waterproof

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waterproof

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