keep cool

Idioms  

1. Also, keep a cool head; stay cool; be cool; (take it cool). Remain calm and under control, as in Keep cool, they'll soon show up, or Be cool, the surprise is not spoiled, or You have to keep a cool head in these volatile situations, or Sit tight, take it cool, they won't bother you again. All these terms employ cool in the sense of “not heated by strong emotion,” a usage dating from the late 1300s or even earlier. The first three expressions are colloquial and date from the second half of the 1800s; both of the last two are slang, and the very last (take it cool) is the oldest, first recorded in 1841. Also see keep one's cool; play it cool.

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Example Sentences

See Examples For:

keep cool

Along with detailing public resources to keep cool, New York Mayor Zohran Mamdani stressed on social media that the "power grid is working overtime to keep us cool."

From Barron's ● Jul. 2, 2026

Beatrix, nine, said of the footbaths: "It's better to keep cool when I'm working and it makes me concentrate more."

From BBC ● Jun. 25, 2026

Some people have been changing their working-from-home set-up to try and keep cool.

From BBC ● Jun. 25, 2026

“We are telling clients to keep cool, fill your tank right now before it gets higher, drive a little less and look forward to a 7700 S&P by year-end,” he said.

From The Wall Street Journal ● Mar. 6, 2026

I want to keep cool and collected, but the blood is rising to my face.

From "The Queen of Water" by Laura Resau