rainproof

[reyn-proof]

adjective

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

   a rainproof cover; a rainproof coat.

verb (used with object)

1. to make rainproof.

rainproof

/ ˈreɪnˌpruːf /

adjective

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

verb

1. (tr) to make rainproof

Word History and Origins

Origin of rainproof¹

First recorded in 1825–35; rain + -proof

Example Sentences

If you want something more rainproof, consider a roofed or louvered structure that can open and close depending on the weather.

Read more on Seattle Times

Unisex styles, including baseball caps, berets and bucket hats, come in updated new materials - including a spotted cow print, black patent leather and rainproof nylon.

Read more on Washington Times

Unisex styles, including baseball caps, berets and bucket hats, come in updated new materials – including a spotted cow print, black patent leather and rainproof nylon.

Read more on Seattle Times

The keypad, which has an LED backlight, will use two AA batteries that need to be replaced twice a year and are rainproof with an IPX5 rating.

Read more on The Verge

Perhaps they’ll have developed a way to rainproof ice surfaces by the time our city gets around to seriously bidding on an outdoor game.

Read more on Seattle Times