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Synonyms

cool as a cucumber

Idioms  

  1. 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.

Pegula gave an insight into what it is like facing the Kazakh, who she labelled "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

It's only her second-ever stage appearance but she's cool as a cucumber, marching in step with the professionals as 60,000 people look on.

From BBC • May 29, 2023

It was literally part of my job to have kind of a persona which was sort of unflappable and, you know, kind of cool as a cucumber.

From Los Angeles Times • Jun. 7, 2022

There on the carpet was Lamont, cool as a cucumber, as if we’d taken ages.

From "Secrets at Sea" by Richard Peck

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

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.