1,400 new words in our dictionary! — Parasocial, glow-up, promposal & more
1,400 new words in our dictionary! — More

waterproof 1 of 2

adjective

ˈwȯ-tər-ˌprüf How to pronounce waterproof (audio)
Definition of waterproofnext
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
The Nike Air Max 95 Gore-Tex sees the classic sneaker weatherized beyond its namesake waterproof membrane. — Ian Servantes, Footwear News, 23 Sep. 2026 To ensure durability in saline conditions, the researchers used butyl rubber and cover glass, topped with a transparent epoxy resin outer protective layer to build a waterproof, pressure-resistant, and corrosion-resistant armor. — Ameya Paleja, Interesting Engineering, 21 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
  1. leakproof
  2. slicker
  3. staunch
  4. raincoat
  5. trench
  6. oilskin
Adjective
  • When in doubt, transferring your go-to toiletries to uniform-sized, leakproof travel bottles will do the trick.
    — Lydia Mansel, Travel + Leisure, 24 Sep. 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
  • Booker has been a staunch opponent of the merger ever since it was announced this year.
    — David Zimmermann, The Washington Examiner, 24 Sep. 2026
  • Glass has been a staunch opponent of immigration and has supported the arrest of undocumented people living in Florida.
    — Devoun Cetoute, Miami Herald, 20 Sep. 2026
Definition of staunch
Noun
  • They’re found in raincoats, and they’re also found in outerwear, which needs a finished product that can keep the consumer dry in long days out in nature.
    — Roy Stephen Canivel, Footwear News, 18 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
  • But with campaigns romanticizing the British countryside and a new mini exhibition at London’s Victoria and Albert Museum honoring one of its greatest hallmarks, the trusty trench, Burberry is fully owning its history.
    — Fiona Sinclair Scott, CNN Money, 22 Sep. 2026
  • The shape appears on leather bombers, trench hybrids and wool coats.
    — Lauren Schuster, Kansas City Star, 21 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

“Waterproof.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/waterproof. Accessed 30 Sep. 2026.

Copy Citation
Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster

Word of the Day

Listen to the pronunciation of epistemic

See Definitions and Examples »

Popular in Grammar & Usage

See More

Do You Need a New Language Peeve?

More Commonly Mispronounced Words

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

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

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

Popular in Wordplay

See More

7 Great Ways to Say 'Great'

The Longest Long Words List

9 Words That Sound Like Insults But Aren't

12 Lovely and Unusual Words for the Natural World

Why do we 'bury the lede?'
See More

Popular

See More

Do You Need a New Language Peeve?

7 Great Ways to Say 'Great'

The Longest Long Words List
See More

Games & Quizzes

See All
Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.
Quordle Can you solve 4 words at once?
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.
Blossom Pick the best words!
Play Missing Letter: a crossword with a twist. Each of the 25 puzzle words start with a different letter of the alphabet. Which letter is missing?
The Missing Letter A daily crossword with a twist
image of the words cracker fly and sale arranged in a triangle with the word fire in the middle
Triple Play Quiz Find the word that pairs with each of the three g...
See All