[ im-per-tur-buh-buhl ]

  1. incapable of being upset or agitated; not easily excited; calm: imperturbable composure.

Origin of imperturbable

1490–1500; <Late Latin imperturbābilis. See im-2, perturbable

Other words for imperturbable

Other words from imperturbable

  • im·per·turb·a·bil·i·ty, im·per·turb·a·ble·ness, noun
  • im·per·turb·a·bly, adverb

Words Nearby imperturbable Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use imperturbable in a sentence

  • As Ladybug, an imperturbable, stonerish gun-for-hire, his exquisitely lanky I-don’t-care hair tucked under a dopy bucket hat, he’s fun to watch for about five minutes.

    Even Brad Pitt Can't Lend Bullet Train Some Steam | Stephanie Zacharek | August 4, 2022 | Time
  • Nor did Eric Ellman, my wise and imperturbable guide to the Mexican-American border river.

    My Night on the Border | Bryan Curtis | May 25, 2010 | THE DAILY BEAST
  • Their remarks are made with an imperturbable gravity, without a gesture, or the movement of a muscle.

    Friend Mac Donald | Max O'Rell
  • imperturbable, on the platform, he seemed to be holding in leash the Wendover train whose engines were throbbing for flight.

    The Creators | May Sinclair
  • "For preaching to the Infidels, and teaching them the dogmas of our Holy Faith," he replied, with imperturbable coolness.

    The Border Rifles | Gustave Aimard
  • Everything which has come down from the ancient monarchies is calm, impassive, imperturbable.

  • Carnot was there—'iron Carnot, far-planning, imperturbable'—and held the fortress till the Emperor abdicated.

    Belgium | George W. T. (George William Thomson) Omond

British Dictionary definitions for imperturbable


/ (ˌɪmpɜːˈtɜːbəbəl) /

  1. not easily perturbed; calm; unruffled

Derived forms of imperturbable

  • imperturbability or imperturbableness, noun
  • imperturbably, adverb
  • imperturbation (ˌɪmpɜːtɜːˈbeɪʃən), noun

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012