waterproof

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.

The mattress should be firm, flat and waterproof.

From BBC • May 5, 2026

A waterproof coating allows the cathode to keep functioning, and the vertical layout helps it dry gradually after water recedes.

From Science Daily • Apr. 19, 2026

Rubber was popular in the early 19th century because it was waterproof and flexible.

From The Wall Street Journal • Apr. 4, 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

The post office gives permanent boys big waterproof capes for the bad weather and they get two weeks holiday every year.

From "Angela's Ashes: A Memoir" by Frank McCourt