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

I was still undecided on the benefits of herbs to keep cool.

From Los Angeles Times ● Aug. 11, 2026

"Orena", 40, from France, said she deliberately chose to make her outfit – Haku from Studios Ghibli’s animated movie "Spirited Away" – from linen and cotton to keep cool.

From Barron's ● Aug. 1, 2026

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

“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

He had to keep cool if he was going to hang with Cool Papa and the Bluesmen.

From "Clayton Byrd Goes Underground" by Rita Williams-Garcia

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