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
Matt Morris, Space.com, 6 June 2025
The little waterproof camera has a colorful and child-friendly design and takes HD photos and videos.
—Mark Sparrow, Forbes.com, 6 June 2025
Caley Sturgill, Southern Living, 30 May 2025
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
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
Whether facing humidity, rain or dust, the waterproof and fog-proof features ensure reliability and durability.
—Matt Morris, Space.com, 6 June 2025
The little waterproof camera has a colorful and child-friendly design and takes HD photos and videos.
—Mark Sparrow, Forbes.com, 6 June 2025
Noun
Made with heavy-duty 600 denier polyester and canvas, this waterproof cover reliably kept water off of our furniture during our fall and winter testing period.
—Caley Sturgill, Southern Living, 30 May 2025
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
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 20 Jun. 2025.
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