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
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
Noor Lobad, Footwear News, 24 May 2025
Speakers Deals In our review of the JBL Clip 4, our expert enjoyed the crisp, rich audio and fully waterproof design.
—& John Mihaly, PC Magazine, 24 May 2025
Izzy Baskette, People.com, 21 May 2025
Fully dust-tight and waterproof, the JBL Flip 6 is a robust portable Bluetooth speaker that delivers strong audio with powerful subwoofer-like bass.
—Cierra Cowan May 19, PC Magazine, 19 May 2025
Timothy Dale, Better Homes & Gardens, 14 May 2025
Ducks, for instance, scoop up the oily secretion from the preen gland and spread it over their feathers to waterproof them.
—Gabe Allen, Discover Magazine, 20 Feb. 2025
See All Example Sentences for waterproof
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Adjective
Urban Decay Face Bond Self-setting Waterproof Foundation, $40 Because the entire face needs to be waterproof if its going to survive a night of bar-hopping: enter this matte, buildable-coverage foundation that aims to absorb sweat and oil during wear, sans powder.
5.
—Noor Lobad, Footwear News, 24 May 2025
Speakers Deals In our review of the JBL Clip 4, our expert enjoyed the crisp, rich audio and fully waterproof design.
—& John Mihaly, PC Magazine, 24 May 2025
Noun
Some of our top picks for this summer include olive-green platform clogs by Matisse, hands-free Skechers sneakers by Martha Stewart, and bubblegum-pink waterproof slides courtesy of Birkenstock.
—Izzy Baskette, People.com, 21 May 2025
Fully dust-tight and waterproof, the JBL Flip 6 is a robust portable Bluetooth speaker that delivers strong audio with powerful subwoofer-like bass.
—Cierra Cowan May 19, PC Magazine, 19 May 2025
Verb
Patch the plumbing or the home's structure to stop active leaks and waterproof the foundation and regrade the yard to prevent minor flooding.
—Timothy Dale, Better Homes & Gardens, 14 May 2025
Ducks, for instance, scoop up the oily secretion from the preen gland and spread it over their feathers to waterproof them.
—Gabe Allen, Discover Magazine, 20 Feb. 2025
See All Example Sentences for waterproof
Cite this Entry
“Waterproof.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/waterproof. Accessed 5 Jun. 2025.
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