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imperturbable

/ˌɪmpəˈtɜːbəbəl/adjective

Staying calm no matter what happens; impossible to fluster.

Example sentences

  • “The pilot remained imperturbable during the turbulence.”
  • “Our imperturbable teacher kept everyone calm during the fire alarm.”

A memory aid: someone who cannot be perturbed. Praise for people who stay calm under pressure.

Featured as word of the day on January 28, 2026.

Synonyms for imperturbable

Antonyms

Find it in: Advanced English words, Positive words, Words to describe a person.

Related words

phlegmaticCalm and slow to react; hard to stir into excitement or strong emotion.indomitableImpossible to defeat, discourage, or bring under control.industriousWorking hard and steadily; diligent.intrepidBrave and adventurous; showing no fear.jauntyShowing a cheerful, confident, and energetic attitude.jovialFull of good humor and warmth toward others.