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imperturbableness

 - 3 dictionary results

im⋅per⋅turb⋅a⋅ble

[im-per-tur-buh-buhl]
–adjective
incapable of being upset or agitated; not easily excited; calm: imperturbable composure.

Origin:
1490–1500; < LL imperturbābilis. See im- 2 , perturbable


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


composed, collected, impassive, cool, unmoved.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To imperturbableness
im·per·turb·a·ble   (ĭm'pər-tûr'bə-bəl)   
adj.  Unshakably calm and collected. See Synonyms at cool.
im'per·turb'a·bil'i·ty, im'per·turb'a·ble·ness n., im'per·turb'a·bly adv.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

imperturbable 
c.1450, from L.L. imperturbabilis "that cannot be disturbed" (Augustine), from in- "not" + *perturbabilis, from L. perturbare "to confuse, disturb" (see perturb).
Online Etymology Dictionary, © 2001 Douglas Harper
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