Synonyms

cool as a cucumber

Idioms

Calm and composed, self-possessed, as in Despite the mishap Margaret was cool as a cucumber. This idiom may be based on the fact that in hot weather the inside of cucumbers remains cooler than the air. [c. 1600] For a synonym, see cool, calm, and collected.

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

cool as a cucumber

“I’m feeling cool as a cucumber in those moments,” Nolan recalled in a recent interview.

From The Wall Street Journal ● Jul. 20, 2026

Dubois insisted he was "not at all" rattled, before Wardley sarcastically replied: "Yeah, he's as cool as a cucumber."

From BBC ● May 7, 2026

Pegula described the inscrutable Rybakina as "cool as a cucumber".

From Barron's ● Jan. 30, 2026

They found the faulty part, did the maintenance and we are now cool as a cucumber.

From Seattle Times ● Aug. 11, 2023

If I was embarrassed, I’m sure she was too, although, knowing her, she would be sitting as cool as a cucumber.

From "Glitch" by Laura Martin

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023