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

Synonyms & Similar Words

Relevance

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

Thoughtful extras include a handy waterproof bag for wet swimwear and the gift of a black handbook with the owner’s favorite island haunts. — Condé Nast, Condé Nast Traveler, 6 Oct. 2026 Ultimate Ears Wonderboom 4 The Ultimate Ears Wonderboom 4 Bluetooth Speaker delivers surprisingly powerful 360-degree sound and deep bass from an ultraportable, floating waterproof design. — Juhi Wadia, PC Magazine, 6 Oct. 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

Cadence capsules are magnetic, stackable, and leakproof cases to hold liquids most conveniently.

— Nneya Richards, Travel + Leisure, 11 Oct. 2026
The real genius is the second lid, which turns the whole thing into a leakproof pitcher.

— Alaina Chou, Bon Appetit Magazine, 31 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

Republicans coalesced around Hilton after the president endorsed him over his GOP rival, Riverside County Sheriff Chad Bianco, a staunch Trump supporter who later said the endorsement made Hilton unelectable.

— Los Angeles Times, Los Angeles Times, 12 Oct. 2026
Democrats must decide whether to take the deal in front of them or, possibly with a congressional majority next year, craft a version more to their liking that may be met with staunch GOP opposition and, thus, gridlock purgatory yet again.

— Jordan Blum, Fortune, 11 Oct. 2026

Definition of staunch

Noun

Sharp suits and smoking jackets came alongside cocoon shapes, functional hunting jackets, double-breasted trenches and generous winter coats, with longer lengths and full collars suggesting the urban style of the 1980s and ’90s.

— Tianwei Zhang, Footwear News, 16 Oct. 2026
Oversized bombers and close-fitting cropped styles mingle with polished trenches, slouchy anoraks, and classic motos.

— Christina Holevas, Vogue, 14 Oct. 2026

Definition of trench

Browse Nearby Words

water nymphs

waterproof

waterproofed

See all Nearby Words

Cite this Entry

Style

“Waterproof.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/waterproof. Accessed 19 Oct. 2026.

Copy Citation

Synonyms of waterproof

adjective

noun

Example Sentences

Browse Nearby Words

Cite this Entry

More from Merriam-Webster

Word of the Day

fervid

Popular in Grammar & Usage

'Affect' vs. 'Effect'

Merriam-Webster’s Great Big List of Words You Love to Hate

The Exceptions of '-s' and '-es' Plurals

Is it 'nerve-racking' or 'nerve-wracking'?

What's the difference between 'fascism' and 'socialism'?

Popular in Wordplay

16 Food Words Recently Added to the Dictionary

The Real Origin of 'Supercalifragilistic'

9 Words That Sound Like Insults But Aren't

7 Words for Bad Endings and Rough Situations

Did 'orange' the fruit or the color come first?

Popular

'Affect' vs. 'Effect'

16 Food Words Recently Added to the Dictionary

The Real Origin of 'Supercalifragilistic'

Games & Quizzes