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Definitions

waterproof

[waw-ter-proof, wot-er-] / ˈwɔ tərˌpruf, ˈwɒt ər- /
ADJECTIVE
impervious to water
Synonyms
Antonyms
WEAK


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

And much like his newly purchased pad, Simmons’ former home “utilizes solar-power for pool and radiant heated flooring, eco-materials and fire-resistant, waterproof triple-panel windows.”

From MarketWatch • Feb. 27, 2026

Each year the birds must stay on platforms of floating ice for long enough to replace weather-beaten feathers with new, waterproof coats.

From BBC • Feb. 25, 2026

Manufacturers frequently treat these fibers with chemicals to make them flame resistant, waterproof, or antimicrobial.

From Science Daily • Feb. 19, 2026

For 30 years, David Bamberger added, Bamberger skied wearing the same Native American-patterned, woven wool jacket, refusing to pay for a newfangled waterproof one.

From The Wall Street Journal • Feb. 4, 2026

“The phone wasn’t waterproof anyway and the bag was drenched. I guess I should dive back down and look for it. We could use some of the other stuff, like the first aid kit.”

From "Storm Runners" by Roland Smith