imperturbable

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im·per·turb·a·ble

(ĭm′pər-tûr′bə-bəl)

adj.

Unshakably calm and collected: "His ... facial expression never deviated from the imperturbable mask" (Molly Worthen). See Synonyms at cool.

im′per·turb′a·bil′i·ty, im′per·turb′a·ble·ness n.

im′per·turb′a·bly adv.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

imperturbable

(ˌɪmpɜːˈtɜːbəbəl)

adj

not easily perturbed; calm; unruffled

ˌimperˌturbaˈbility, ˌimperˈturbableness n

ˌimperˈturbably adv

imperturbation n

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

im•per•turb•a•ble

(ˌɪm pərˈtɜr bə bəl)

adj.

incapable of being upset or agitated; calm.

[1490–1500; < Late Latin]

im`per•turb`a•bil′i•ty, im`per•turb′a•ble•ness, n.

im`per•turb′a•bly, adv.

ThesaurusAntonymsRelated WordsSynonymsLegend:

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Adj.

imperturbable - not easily perturbed or excited or upset; marked by extreme calm and composure; "hitherto imperturbable, he now showed signs of alarm"; "an imperturbable self-possession"; "unflappable in a crisis"

unflappable

composed - serenely self-possessed and free from agitation especially in times of stress; "the performer seemed completely composed as she stepped onto the stage"; "I felt calm and more composed than I had in a long time"

imperturbable

adjective calm, cool, collected, composed, complacent, serene, tranquil, sedate, undisturbed, unmoved, stoic, stoical, unfazed (informal), unflappable (informal), unruffled, self-possessed, nerveless, unexcitable, equanimous He was cool and aloof, and imperturbable.
upset, nervous, frantic, agitated, ruffled, touchy, jittery (informal), excitable, panicky

Collins Thesaurus of the English Language – Complete and Unabridged 2nd Edition. 2002 © HarperCollins Publishers 1995, 2002

imperturbable

adjective

Not easily excited, even under pressure:

calm, collected, composed, cool, cool-headed, detached, even, even-tempered, nonchalant, possessed, unflappable, unruffled.

Translations

φλεγματικός

calmo con calma imperterrito

imperturbable

[ˌɪmpəˈtɜːbəbl] ADJ [person, manner] → imperturbable, impasible

Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005

imperturbable

[ˌɪmpə^rˈtɜː^rbəb^əl] adj → imperturbable

Collins English/French Electronic Resource. © HarperCollins Publishers 2005

imperturbable

adj → unerschütterlich; he is completely imperturbable → er ist durch nichts zu erschüttern

Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007

imperturbable

[ˌɪmpəˈtɜːbəbl] adj → imperturbabile

Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995

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References in classic literature ?

From the slow, imperturbable gravity of that broad-chested man you would think he had never smiled in his life.

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The last act was a triumph for the hero, poor and of the masses, the representative of the audience, over the villain and the rich man, his pockets stuffed with bonds, his heart packed with tyrannical purposes, imperturbable amid suffering.

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Thought boiled in his brain, conjectures abounded, and D'Artagnan was a great drawer of horoscopes; but, with that imperturbable phlegm which does more than genius for the fortune and happiness of men of action, he put off reflection till the next day, for fear, he said, not to be fresh when he wanted to be so.

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That imperturbable personage came and went with his habitual business-like air, while nothing whatever denoted that any unusual matter preoccupied his mind.

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And so saying, he moved along the windlass, here and there using his leg very freely, while imperturbable Bildad kept leading off with his psalmody.

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He did smile sometimes, it is true; and there was a good deal of dry, sarcastic humour about him, which told the more from the imperturbable gravity of his tone and manner.

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Ten years ago Lavalle, "that imperturbable dreamer of the heavens," as Lazareff hailed him, gathered together the fruits of a lifetime's labour, and gave it, with well-justified contempt, to a world bound hand and foot to Barald's Theory of Vertices and "compensating electric nodes." "They shall see," he wrote--in that immortal postscript to The Heart of the Cyclone--"the Laws whose existence they derided written in fire beneath them."

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With her imperturbable calm she did not begin to speak in front of the valet.

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Then, after a moment's pause, during which he studied closely his companion's imperturbable face, he added the question which forced its way to his lips.

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Perhaps his imperturbable character was never more strikingly developed, for he preserved his usual equable smile notwithstanding that his body was dangling in a most uncomfortable position, all loose and limp and shapeless, while his long peaked cap, unequally balanced against his exceedingly slight legs, threatened every instant to bring him toppling down.

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Jurgis had given them so many instructions and warned them against so many perils, that the women were quite pale with fright, and even the imperturbable delicatessen vender, who prided himself upon being a businessman, was ill at ease.

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He has NOT literally `ever,' in these weeks that I myself have lived with him and so closely watched him; he has been an imperturbable little prodigy of delightful, lovable goodness.