Definition of (as) cool as a cucumber in US English:

phrase

• 1Untroubled by heat or exertion.

  ‘he leaps up the six flights of stairs and arrives at the top as cool as a cucumber’

  More example sentences

  • ‘How to be cool as a cucumber at the searing heat of 45 degree Celsius?’
  • ‘No, Mamma, it's not hot at all, it's as cool as a cucumber.’’

  Synonyms

  untroubled, undisturbed, unworried, unconcerned, unmoved, unflustered, unruffled, unshaken, undismayed

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  1. 1.1 Calm and relaxed.
     Example sentences

     • ‘Trying to get him angry with an increasingly cruel set of stunts, our newly cool as a cucumber bandleader learns that staying calm has some sensational fringe benefits.’
     • ‘The man from Moscow, calm and cool as a cucumber, knocked him out cold.’
     • ‘Unperturbed, cool as a cucumber, he stuck with his task.’
     • ‘I bet you anything Jason's at home cool as a cucumber, not stressing over what he's going to wear.’
     • ‘Opening night, and while Amy was as cool as a cucumber, I was the one that was feeling nervous, and I wasn't even in the play at all.’

     Synonyms

     calm, cool, unconcerned, collected, cool, calm, and collected, cool as a cucumber, composed, airy

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