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[im-per-tur-buh-buh l] /ˌɪm pərˈtɜr bə bəl/
incapable of being upset or agitated; not easily excited; calm:
imperturbable composure.
Origin of imperturbable
1490-1500; < Late Latin imperturbābilis. See im-2, perturbable
Related forms
imperturbability, imperturbableness, noun
imperturbably, adverb
composed, collected, impassive, cool, unmoved. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for imperturbably
Historical Examples
  • "Boys, I was playin' poker tolerable well in Missouri when you all was nursin'," replied Wade, imperturbably.

  • "That wouldn't have settled the matter," continued Bradley, imperturbably.

  • "In the capacity of Csar's historian," said Dumas imperturbably.

    An Englishman in Paris Albert D. (Albert Dresden) Vandam
  • "They appreciate me fast enough," returned Terry, imperturbably.

    The Four Pools Mystery Jean Webster
  • "On an average, she made a new will at least once a year," said Mr. Wells imperturbably.

  • "Be patient; the time will come," Jean imperturbably replied.

    The Downfall Emile Zola
  • "All the more reason why mine should be more interesting, then," retorted Tilly, imperturbably.

    The Sunbridge Girls at Six Star Ranch Eleanor H. (Eleanor Hodgman) Porter
  • Peter tried to find the speakers with his gaze for a moment and then went on imperturbably.

    The Vagrant Duke George Gibbs
  • The next moment she was on the floor on her back, wailing, but Tammas smoked on imperturbably.

    Auld Licht Idylls J. M. Barrie
  • "This is true in every particular," said Croustillac imperturbably.

British Dictionary definitions for imperturbably


not easily perturbed; calm; unruffled
Derived Forms
imperturbability, 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
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Word Origin and History for imperturbably



c.1500, from Middle French imperturbable and directly from Late Latin imperturbabilis "that cannot be disturbed" (Augustine), from assimilated form of in- "not, opposite of" (see in- (1)) + *perturbabilis, from Latin perturbare "to confuse, disturb" (see perturb). Related: Imperturbably; imperturbability.

Online Etymology Dictionary, © 2010 Douglas Harper
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