adjective

cool

cool, stylish, calm, chilly

It's a cool day in autumn.

It's a cool day in autumn.

She wears very cool clothes.

She wears very cool clothes.

He's a really cool guy.

He's a really cool guy.

Stay cool, don't get angry.

Stay cool, don't get angry.

((as adjective)) pleasantly cold The weather is cool today.

((as adjective)) stylish That's a cool jacket.

((as adjective)) calm Stay cool.

Synonyms: chilly, stylish, calm; Antonyms: warm, hot, uncool, agitated

From Old English 'cōl', related to 'cold'. The slang meaning 'stylish' or 'excellent' emerged in the 20th century, possibly from jazz culture.

Think of a 'cool' breeze on a hot day (pleasantly cold), which is like how a 'cool' person is pleasant and calm to be around.

This page is designed for learning support. Please use it as a learning reference, not as a formal reference.