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

“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

Those who didn't get a place, or wanted to switch, have had to keep cool heads amid cash incentives and offers of free accommodation from universities in the Clearing system.

From BBC • Aug. 15, 2025

To replicate this operation at scale requires whole data centers’ worth of GPUs, which produce audible noise and require a lot of water to keep cool.

From Slate • Mar. 28, 2025

Grinder added that every year she has seen less rain, more dust and skyrocketing electricity rates as residents try to keep cool.

From Salon • Nov. 3, 2024

Still, she tried to keep cool as she looked at the man who was supposed to be helping her.

From "City Spies" by James Ponti