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

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

When Johannès was left off the EuroBasket squad in 2023, she was caught between the French national team’s staunch requirements and the WNBA’s prioritization rule, which required her to be present for opening day.

— Eden Laase, New York Times, 4 Sep. 2026
Johnson’s mayoral tenure has been marked by an inability to work with Springfield, a skill deficiency displayed by his staunch allies at the teachers union and the aligned board members on the CBOE.

— The Editorial Board, Chicago Tribune, 31 Aug. 2026

Definition of staunch

Noun

The original Liu cinched waist raincoat has been updated in tonal burgundy, while the Athena style comes in navy blue and black with butter yellow sleeve detailing.

— Samantha Conti, Footwear News, 8 Sep. 2026
She was last seen wearing a Winnie-the-Pooh shirt, a pink raincoat and white tennis shoes.

— Yana Johnson, NBC news, 6 Sep. 2026

Definition of raincoat

Noun

Firefighters hacked through wood, slate and concrete trench lines, a process the Reserve Organization of America says likely generated silica-containing dust.

— Karissa Waddick, USA Today, 6 Sep. 2026
The front office also re-signed key interior trench pieces, keeping offensive guard Sam Cosmi locked up alongside defensive tackle Daron Payne, while adding offensive line depth with veteran additions to protect Daniels.

— David Troy OutKick, FOXNews.com, 4 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

See all Nearby Words

Cite this Entry

Style

“Waterproof.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/waterproof. Accessed 16 Sep. 2026.

Copy Citation

Synonyms of waterproof

adjective

noun

Example Sentences

Browse Nearby Words

Cite this Entry

More from Merriam-Webster

Word of the Day

facsimile

Popular in Grammar & Usage

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

A Who’s Who Regarding ‘Who’s’ and ‘Whose’

Why do we use apostrophes to show possession?

'A' or 'an'? What about before 'h'? An Indefinite Article Guide

Why is '-ed' sometimes pronounced at the end of a word?

Popular in Wordplay

9 Words That Sound Like Insults But Aren't

Back to School Vocabulary

Words from the 'Odyssey'

Ye Olde Nincompoop: Old-Fashioned Words for 'Stupid'

14 Phobias You Probably Haven't Heard Of

Popular

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

9 Words That Sound Like Insults But Aren't

Back to School Vocabulary

Games & Quizzes