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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.

Elon Musk tweeted in 2022 that the Cybertruck “will be waterproof enough to serve briefly as a boat.”

From Los Angeles Times • Mar. 19, 2026

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

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

And Kojo had remembered to pack waterproof matches.

From "The Smartest Kid in the Universe" by Chris Grabenstein