waterproof

1 of 3

adjective

wa·​ter·​proof ˈwȯ-tər-ˌprüf How to pronounce waterproof (audio)
ˈwä-
: impervious to water
especially : covered or treated with a material (such as a solution of rubber) to prevent permeation by water
waterproofness noun

waterproof

2 of 3

noun

1
: a waterproof fabric
2
chiefly British : raincoat

waterproof

3 of 3

verb

waterproofed; waterproofing; waterproofs

transitive verb

: to make waterproof
waterproofer noun

Example Sentences

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.
Recent Examples on the Web
Adjective
Made with a waterproof leather outsole, it's made to hold up even after years of use. Ebenezer Samuel, Men's Health, 13 Jan. 2023 The tattoos are waterproof, says the company, but can be washed off with a cleanser. Marc Saltzman, USA TODAY, 6 Jan. 2023 Fashion meets function with a buckled suede boot that looks cute while also being waterproof. Kristina Rutkowski, Harper's BAZAAR, 3 Jan. 2023 Keep in mind, however, that this device isn’t waterproof. Nerisha Penrose, ELLE, 31 Dec. 2022 One big difference between this Kindle and the Paperwhite is the fact that the Paperwhite is waterproof. Jacob Siegal, BGR, 24 Dec. 2022 Made for the mountains, these pants are waterproof and insulated to keep you warm and dry on your next run. Samantha Crompton, Condé Nast Traveler, 22 Dec. 2022 The wool footbed helps wick away moisture to keep your feet warm and dry while the waterproof leather upper and rubber sole keep out the snow and ice. Grace Wu, Good Housekeeping, 14 Nov. 2022 These waterproof leather gloves from Give’r can withstand frigid negative-degree temperatures all the way up to the heat of pulling a log out of a fire. Kevin Cortez, Popular Mechanics, 25 Oct. 2022
Noun
The best rain boots have a sturdy rubber sole and some kind of waterproof—or at least, water-resistant—upper. Isaiah Freeman-schub, Robb Report, 26 Jan. 2023 Slim enough to fit in a tote bag for a beach day or a camping trip, the waterproof, Airplay-compatible device integrates seamlessly with existing Sonos home networks. Christian Gollayan, Men's Health, 12 Nov. 2022 OtterBox’s waterproof Yampa Dry Duffle Keeps gear safe from water, sand, and dirt. Outside Online, 8 Oct. 2018 Crafted to add wideness and fullness to the eyes, the pencil is infused with crushed pearl powder to hydrate and smooth skin where applied—not to mention its waterproof for up to 14 hours. Kiana Murden, Vogue, 19 Sep. 2022 And most importantly, all Paperwhite models are IPX8 waterproof, for use in the bathtub, in a swimming pool, or at the beach. Andrew Cunningham, Ars Technica, 13 Sep. 2022 After one night in this durable tent, everyone will wake up happy campers. Give the gift of music with this waterproof, virtually indestructible speaker. Karla Pope, Woman's Day, 10 Sep. 2022 The company says this new version boasts 14 hours of battery life, an improved wireless range, and an IP67 waterproof and dustproof rating. WIRED, 22 Aug. 2022 Opt for waterproof or water-resistant materials for extra protection in inclement weather. Emma Seymour, Good Housekeeping, 10 Aug. 2022
Verb
The researchers suggest Romans used the jars for both red and white winemaking and the pine residue found was part of the tar that helped to seal and waterproof the amphorae. Monica Cull, Discover Magazine, 29 June 2022 To waterproof the stall, white ceramic subway tile over cement board runs floor to ceiling and wraps the edges of the window recess. Kit Selzer, Better Homes & Gardens, 8 Sep. 2022 Apartment-building owners and residents repair or waterproof their walls and roofs. Vaishnavi Chandrashekhar, The Atlantic, 7 Feb. 2022 At the Statue of Liberty, plans are in the works to waterproof the exterior of the massive stone fort built in 1807 that serves as the monument's base. Rebecca Reynolds, USA TODAY, 10 Dec. 2021 At the Statue of Liberty, plans are in the works to waterproof the exterior of the massive stone fort built in 1807 that serves as the monument's base. Rebecca Reynolds, ajc, 10 Dec. 2021 The sealant was being used to waterproof the roof and had to be spread across the entire membrane, not just applied to seams. Washington Post, 26 Aug. 2021 The sealant was being used to waterproof the roof and had to be spread across the entire membrane, not just applied to seams. Washington Post, 26 Aug. 2021 The sealant was being used to waterproof the roof and had to be spread across the entire membrane, not just applied to seams. Washington Post, 26 Aug. 2021 See More

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.

Word History

First Known Use

Adjective

1725, in the meaning defined above

Noun

1788, in the meaning defined at sense 1

Verb

1820, in the meaning defined above

Time Traveler
The first known use of waterproof was in 1725

Dictionary Entries Near waterproof

Cite this Entry

“Waterproof.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/waterproof. Accessed 9 Feb. 2023.

Kids Definition

waterproof

1 of 3 adjective
wa·​ter·​proof -ˌprüf How to pronounce waterproof (audio)
: not letting water through
especially : covered or treated with a material to prevent penetration by water

waterproof

2 of 3 noun
chiefly British

waterproof

3 of 3 verb
: to make waterproof

More from Merriam-Webster on waterproof

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