WATERPROOF Synonyms: 27 Similar and Opposite Words

waterproof 1 of 2

adjective

ˈwȯ-tər-ˌprüf

Definition of waterproof

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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Antonyms & Near Antonyms

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

Synonyms & Similar Words

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

Plus, its rugged IPX7 waterproof casing easily withstands rain, spills, and outdoor grime, while the 5,200mAh battery delivers a full 24 hours of non-stop playback. — Juhi Wadia, PC Magazine, 6 Sep. 2026 Waterproof formula—but doesn’t feel like a typical waterproof foundation, which can feel heavy and settle into uneven texture. — Alanna Martine Kilkeary, Glamour, 4 Sep. 2026

Noun

And use all the proper types of sunblock and waterproof, too. — Scott Fowler, Charlotte Observer, 10 June 2026 The super-absorbent top layer is designed to tackle spills while the waterproof back keeps your little one’s clothing dry. — Pamela Brill, Parents, 7 Apr. 2026 See All Example Sentences for waterproof

Recent Examples of Synonyms for waterproof

Adjective

The real genius is the second lid, which turns the whole thing into a leakproof pitcher.

— Alaina Chou, Bon Appetit Magazine, 31 Aug. 2026
If using cold water for thawing, place chicken in leakproof packaging, submerge, and allow about 30 minutes for every pound.

— Sheena Chihak, Better Homes & Gardens, 20 Aug. 2026

Definition of leakproof

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

Definition of slicker

Adjective

Some of the nations attending the meeting in western Ukraine's Ivano-Frankivsk region, such as Poland and Romania, have been staunch supporters of Ukraine.

— Arkansas Online, Arkansas Online, 19 Sep. 2026
Some of the nations attending the meeting in western Ukraine’s Ivano-Frankivsk region, such as Poland and Romania, have been staunch supporters of Ukraine.

— Samya Kullab, Los Angeles Times, 18 Sep. 2026

Definition of staunch

Noun

Spanning from its practical origins to its present fashionable status, the Burberry trench represents the quintessential British influence on the fashion industry.

— Tianwei Zhang, Footwear News, 18 Sep. 2026
Stone tools, however, showed up in 10 layers of the same trench, suggesting the site was occupied from 190,000 to 70,000 years ago.

— Katie Hunt, CNN Money, 9 Sep. 2026

Definition of trench

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
Daigle has a face like an oilskin raincoat, patinated from life on the land moonlighting for mining companies—chasing other people’s dreams.

— Genesee Keevil, Popular Mechanics, 17 May 2018

Definition of oilskin

Browse Nearby Words

water nymphs

waterproof

waterproofed

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Style

“Waterproof.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/waterproof. Accessed 21 Sep. 2026.

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Synonyms of waterproof

adjective

noun

Example Sentences

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