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As cool as a cucumber, means to be calm and in control of your emotions.
• Jane is good in a crisis as she stays as cool as a cucumber.
• The politician stayed as cool as a cucumber during the tough interview.
It probably originates from the fact that cucumbers are quite cool to the touch. You might ask yourself, why a cucumber, aren’t carrots cool as well? Perhaps it is associated with the colour, as green is considered to be a cool colour (unlike orange).
In literature, apparently the earliest recorded use of the phrase is “I …., cool as a cucumber could see the rest of womankind.”, from Poems, New Song on Smiles by John Gay, which was published in 1732.
At ACET we can help you be less stressed and as cool as a cucumber when speaking English at work, on holiday or in any other situation 🙂