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[dis-kuh n-surt] /ˌdɪs kənˈsɜrt/
verb (used with object)
to disturb the self-possession of; perturb; ruffle:
Her angry reply disconcerted me completely.
to throw into disorder or confusion; disarrange:
He changed his mind and disconcerted everybody's plans.
Origin of disconcert
obsolete French
From the obsolete French word disconcerter, dating back to 1680-90. See dis-1, concert
Related forms
disconcerted, adjective
disconcertion, disconcertment, noun
1. discompose, perplex, bewilder, abash, discomfit.
1. calm. 2. arrange.
Synonym Study
1. See confuse. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for disconcert
Historical Examples
  • The man's conceit irritated Henry and he longed to disconcert him.

    Changing Winds

    St. John G. Ervine
  • Still this did not disconcert Rose, but rather made her laugh the more.

    Fruitfulness Emile Zola
  • The sixteen stories under him did not disconcert him at all.

    The Mind Master Arthur J. Burks
  • Even the old Mexican shooting-suit seemed in no way to disconcert him.

    The Market-Place Harold Frederic
  • This exclamation appeared to disconcert Yoga Rama a good deal.

    Telepathy W. W. Baggally
  • I say disconcerting because it emphatically did disconcert Henry.

    A Great Man Arnold Bennett
  • Keep your party in when they are in; disconcert the enemy when your friends are out.

    The Fortunes Of Glencore Charles James Lever
  • His words, for the moment, seemed to disconcert the two men.

    The Ivory Snuff Box Arnold Fredericks
  • He faced me very sharply, as though to disconcert me by the suddenness of his question.

    Paul Patoff

    F. Marion Crawford
  • It took a lot to disconcert Sam, and he was the calmest person present.

    The Girl on the Boat Pelham Grenville Wodehouse
British Dictionary definitions for disconcert


verb (transitive)
to disturb the composure of
to frustrate or upset
Derived Forms
disconcertion, disconcertment, 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 disconcert

1680s, from Middle French disconcerter (Modern French déconcerter) "confused," from dis- "do the opposite of" (see dis-) + concerter (see concert). Related: Disconcerted; disconcerting; disconcertingly.

Online Etymology Dictionary, © 2010 Douglas Harper
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