Definition

Not able to be damaged or affected by water.

Example

I bought a waterproof jacket to keep me dry in the rain.

Conversation

Did you see that new jacket I got?

Yeah, it looks really nice! Is it waterproof?

Yes, I wanted something that would keep me dry in the rain.

Good choice! You'll definitely need it this season.

Synonyms & Antonyms

Definition

A type of material or garment that does not allow water to pass through it.

Example

She wore a waterproof jacket to stay dry in the rain.

Conversation

Did you get that new waterproof jacket yet?

Not yet, but I heard it's perfect for rainy days.

I really need something waterproof for our hiking trip next week.

Definition

To make something unable to be affected by water, so that it does not get wet.

Example

They decided to waterproof the tent before their camping trip.

Tense Forms

Conversation

Did you know you can waterproof your backpack?

Really? I had no idea that was an option!

Yeah, there are sprays you can use to make it resistant to water.

Root Explanation

Waterproof → It is formed from "water" (from Old English "wæter", meaning the liquid that falls as rain or is found in rivers and lakes) and "proof" (from Old English "prōf", meaning to test or to prove). The word "waterproof" means resistant to water or able to withstand the effects of water without being damaged.

Memory Tip

Think of 'water' as the liquid that can cause damage, and 'proof' as a test of resistance — so waterproof means something that can withstand the test of water.

Visually Confused Words