Definition

Something that is designed to prevent air from entering or escaping, making it completely sealed.

Example

The container is airproof, ensuring that no air can enter or escape.

Conversation

I just bought some new containers for my food.

Oh nice! Are they airproof?

Yeah, they really keep everything fresh for a long time.

That's awesome! I need to get some like that.

Synonyms & Antonyms

Root Explanation

Airproof → It is formed from "air" (meaning the invisible gaseous substance surrounding the Earth) and "proof" (from Old English "prūf", meaning resistant or protected against). The word "airproof" means resistant to the passage of air, preventing air from entering or escaping.

Memory Tip

Think of something that is 'protected against' ('proof') the 'air' — that's why airproof means it keeps air from getting in or out.

Visually Confused Words