wa·ter·proof
ˈwȯ-tər-ˌprüf 
ˈwä-
: impervious to water
especially
: covered or treated with a material (such as a solution of rubber) to prevent permeation by water
waterproofness
noun
waterproofed; waterproofing; waterproofs
: to make waterproof
waterproofer
noun
Synonyms
Examples of waterproof in a Sentence
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
Will Palmer, Outside Online, 28 June 2024
This speaker has a loud sound and a waterproof design, perfect for bringing to any pool party.
—Jessica Copeland, Rolling Stone, 28 June 2024
Brandon Widder, The Verge, 29 June 2024
On rainy days, make sure your top layer is water-resistant (for short hikes in light rain) or waterproof (for extended hikes in heavy rain).
—Jessica MacDonald, Travel + Leisure, 22 Mar. 2024
Melissa Rae Sanger, The Mercury News, 27 June 2024
If your home has a history of flooding, Klosterman suggests having your basement waterproofed with a high-performance waterproofing compound and using tile instead of carpeting for flooring.
—Kristine Gill, Better Homes & Gardens, 27 June 2024
See all Example Sentences for waterproof 
Adjective
Encased in super-hard plastic and completely waterproof (even floatable), the Gen 2 has quickly garnered a following among fishermen and watersports enthusiasts for more than being tough.
—Will Palmer, Outside Online, 28 June 2024
This speaker has a loud sound and a waterproof design, perfect for bringing to any pool party.
—Jessica Copeland, Rolling Stone, 28 June 2024
Noun
The 10th-gen Kindle Paperwhite touts a worry-free waterproof build, weekslong battery life, and a crisp 300ppi panel that’s far sharper than the previous iteration.
—Brandon Widder, The Verge, 29 June 2024
On rainy days, make sure your top layer is water-resistant (for short hikes in light rain) or waterproof (for extended hikes in heavy rain).
—Jessica MacDonald, Travel + Leisure, 22 Mar. 2024
Verb
Female oil-collecting bees, for example, mix plant oils (instead of nectar) with pollen to nourish their young and ingeniously use these oils to waterproof their nests.
—Melissa Rae Sanger, The Mercury News, 27 June 2024
If your home has a history of flooding, Klosterman suggests having your basement waterproofed with a high-performance waterproofing compound and using tile instead of carpeting for flooring.
—Kristine Gill, Better Homes & Gardens, 27 June 2024
See all Example Sentences for waterproof
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'waterproof.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near waterproof
Cite this Entry
“Waterproof.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/waterproof. Accessed 7 Jul. 2024.
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