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
Corinne Purtill, Los Angeles Times, 2 Mar. 2025
Each light is made with waterproof stainless steel that can withstand rain, snow, and frost.
—Ali Faccenda, Better Homes & Gardens, 26 Feb. 2025
Stackcommerce Team (sponsored), PCMAG, 28 Jan. 2025
Plus, it’s made from durable brass that’s covered in 14-carat gold plating that’s hypoallergenic, waterproof, and tarnish-resistant, according to the brand.
—Clara McMahon, People.com, 23 Jan. 2025
Gabe Allen, Discover Magazine, 20 Feb. 2025
They can be waterproofed with plaster, reinforced to withstand earthquakes and hurricanes, and manufactured on a vast scale with minimal environmental damage.
—Justin Davidson, Curbed, 17 Jan. 2025
See All Example Sentences for waterproof
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Adjective
Before the divers rolled in, captain Joey Broyles let down a waterproof camera to assess conditions below.
—Corinne Purtill, Los Angeles Times, 2 Mar. 2025
Each light is made with waterproof stainless steel that can withstand rain, snow, and frost.
—Ali Faccenda, Better Homes & Gardens, 26 Feb. 2025
Noun
One drawback of physical storage is wear and tear on a physical format, but this flash drive has a durable aluminum body and a waterproof, dust-proof case.
—Stackcommerce Team (sponsored), PCMAG, 28 Jan. 2025
Plus, it’s made from durable brass that’s covered in 14-carat gold plating that’s hypoallergenic, waterproof, and tarnish-resistant, according to the brand.
—Clara McMahon, People.com, 23 Jan. 2025
Verb
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
They can be waterproofed with plaster, reinforced to withstand earthquakes and hurricanes, and manufactured on a vast scale with minimal environmental damage.
—Justin Davidson, Curbed, 17 Jan. 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 10 Mar. 2025.
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