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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

She invented a reusable, waterproof diaper cover made first from a shower curtain and later from nylon parachute cloth, into which mothers could insert a cloth diaper pad.

From The Wall Street Journal • Apr. 9, 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

It lay on its side in such a way that the solid parts of the block formed a roof and a floor, both waterproof, and the hollows made two spacious rooms.

From "Mrs. Frisby and the Rats of NIMH" by Robert C. O'Brien




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