Definition

A person or thing that makes something waterproof, preventing water from passing through.

Example

The waterproofer applied a special coating to the roof to keep it dry during the rainy season.

Conversation

Did you know that I just bought a new waterproofer for my shoes?

Really? That's a smart idea, especially with the rain lately.

Yeah, I figured it's better to be safe than sorry.

Absolutely! No one likes wet socks.

Synonyms & Antonyms

Root Explanation

Waterproofer → It is formed from "water" (from Old English *wæter*, meaning liquid that falls as rain or is found in rivers) and "proof" (from Old English *prōf*, meaning to test or to prove) combined with the suffix "-er" (meaning a person who). A waterproofer is a person who tests or proves something to be resistant to water.

Memory Tip

Think of someone who 'tests' ('proof') something to make sure it can withstand 'water' — that's what a waterproofer does.

Visually Confused Words