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
Amelia McBride, Travel + Leisure, 8 Sep. 2025
The leaves are oversized (about 4 inches), and are crafted from waterproof and fade-resistant silk fabric.
—Mariana Best, Better Homes & Gardens, 5 Sep. 2025
Christopher Murray
May Earn A Commission If You Buy Through Our Referral Links. This Content Was Created By A Team That Works Independently From The Fox Newsroom., FOXNews.com, 9 Aug. 2025
Fireproof/waterproof Most lockboxes claim to be fireproof and waterproof.
—Bestreviews, Chicago Tribune, 7 Aug. 2025
Alexandra Harrell, Sourcing Journal, 22 Aug. 2025
The reason being HoverAir can't guarantee waterproofing if users are dissecting their drones.
—Joe Salas
august 21, New Atlas, 21 Aug. 2025
See All Example Sentences for waterproof
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Adjective
It all zips up into a compact rectangular case that’s covered in a durable, waterproof material that’ll ensure your tech gear stays safe throughout your travels.
—Amelia McBride, Travel + Leisure, 8 Sep. 2025
The leaves are oversized (about 4 inches), and are crafted from waterproof and fade-resistant silk fabric.
—Mariana Best, Better Homes & Gardens, 5 Sep. 2025
Noun
These overalls are 100% waterproof and windproof and lined for freezing weather conditions.
—Christopher Murray
May Earn A Commission If You Buy Through Our Referral Links. This Content Was Created By A Team That Works Independently From The Fox Newsroom., FOXNews.com, 9 Aug. 2025
Fireproof/waterproof Most lockboxes claim to be fireproof and waterproof.
—Bestreviews, Chicago Tribune, 7 Aug. 2025
Verb
Last May, Denmark’s Ministry of the Environment shared plans to ban all clothing, shoes and waterproofing agents containing PFAS.
—Alexandra Harrell, Sourcing Journal, 22 Aug. 2025
The reason being HoverAir can't guarantee waterproofing if users are dissecting their drones.
—Joe Salas
august 21, New Atlas, 21 Aug. 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 Sep. 2025.
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