Definition

A substance that is added to a mixture, like paint or varnish, to make it harden and become solid.

Example

The painter used a hardener to ensure the finish would be durable and long-lasting.

Conversation

I just added a hardener to my paint for the project.

Oh nice! Does that really make a difference?

Definitely, it helps the finish become stronger and last longer.

Sounds smart! I should try using a hardener next time too.

Synonyms & Antonyms

Root Explanation

Hardener → It is formed from "hard" (from Old English "heard", meaning firm or solid) and "-er" (meaning a person or thing that performs a specified action). The word "hardener" refers to a substance that makes something hard or firm.

Memory Tip

Think of something that makes a material 'firm' or 'solid' — that's what a hardener does.

Visually Confused Words