rainproof

American  

[reyn-proof] / ˈreɪnˌpruf /

adjective

1. impervious to rain; keeping out or unaffected by rain.

   a rainproof cover; a rainproof coat.

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verb (used with object)

1. to make rainproof.

rainproof British  

/ ˈreɪnˌpruːf /

adjective

1. Also: raintight.  (of garments, materials, buildings, etc) impermeable to rainwater

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verb

1. (tr) to make rainproof

Etymology

Origin of rainproof

First recorded in 1825–35; rain + -proof

Example Sentences

They form weirdly impenetrable firefighting foam; they also give us waterproof mascara, rainproof tents, leakproof burger wrappers, and nonstick pans.

From Slate • Jul. 30, 2022

Rainy day essentials: Neutral-colored trenchcoat, waterproof tote, rainproof booties and an umbrella with a fun, feminine print.

From Seattle Times • Mar. 1, 2017

However, during a recent trip to Scotland, the rain and wind drove him inside — to a store where he purchased a wind- and rainproof North Face jacket.

From Washington Post • Aug. 6, 2015

This season the rainproof boot took on stacked high heels, and also appeared in a calf-length version with a wedge platform.

From US News • Feb. 23, 2015

Silk and woolen materials for umbrella making, raincoats, etc., are expected to be rainproof.

From Textiles For Commercial, Industrial, and Domestic Arts Schools; Also Adapted to Those Engaged in Wholesale and Retail Dry Goods, Wool, Cotton, and Dressmaker's Trades by Dooley, William H. (William Henry)