Definition

A liquid used to make paint or varnish less thick, allowing it to spread more easily.

Example

The artist added a thinner to the paint to achieve a smoother finish.

Conversation

I need to pick up some thinner for my painting project.

Oh, what kind of paint are you using?

It's an oil-based paint, so I definitely need a good thinner.

Sounds great! Make sure to get one that dries quickly.

Synonyms & Antonyms

Root Explanation

Thinner → It is formed from "thin" (from Old English "þynne", meaning having little thickness) and "-er" (meaning one who or that which). The word "thinner" refers to something that has less thickness or is more slender than something else.

Memory Tip

Think of something that is 'less thick' — 'thin' means having little thickness, and '-er' indicates it is more so. This helps you remember that 'thinner' describes something that is more slender.

Visually Confused Words