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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
1680-90; < obsolete French disconcerter. See dis-1, concert
Related forms
disconcerted, adjective
disconcertion, disconcertment, noun
1. discompose, perplex, bewilder, abash, discomfit. See confuse.
1. calm. 2. arrange. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for disconcert
Historical Examples
  • Now Jacqueline, for her purposes, had thought to disconcert the man unused to courts.

    The Missourian Eugene P. (Eugene Percy) Lyle
  • That word, like nearly all her speeches, seemed rather to disconcert her hearers.

    Fraternity John Galsworthy
  • Once, you know, you dropped me; but nothing seemed to disconcert that young man.

    The Gold Trail Harold Bindloss
  • The absence of citizens and of a deputation, and even the burning of Moscow, did not disconcert him.

    War and Peace Leo Tolstoy
  • Her brother-in-law's sudden appearance did not disconcert her.

  • For herself, she seemed above the reach of any circumstance to disconcert.

    A Girl of the Klondike Victoria Cross
  • The other conjecture may possibly have sufficient truth in it to disconcert collectors of examples of local crafts.

    Chats on Old Clocks Arthur Hayden
  • Still this did not disconcert Rose, but rather made her laugh the more.

    Fruitfulness Emile Zola
  • Julien's arrival seemed very much to disconcert the two friends who did not say another word.

  • Even the old Mexican shooting-suit seemed in no way to disconcert him.

    The Market-Place Harold Frederic
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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