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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.

Each animal was equipped with a waterproof heart rate monitor, dive recorder, and radio transmitter.

From Science Daily • May 9, 2026

The mattress should be firm, flat and waterproof.

From BBC • May 5, 2026

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

I slipped on waterproof shoes, grabbed a pair of shears and, still in my pajamas, tiptoed down the grand staircase of the château and out onto the dewy grass of the garden.

From The Wall Street Journal • Mar. 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




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