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

From the obsolete French word disconcerter, dating back to 1680–90. See dis-1, concert
Related formsdis·con·cert·ed, adjectivedis·con·cer·tion, dis·con·cert·ment, noun

Synonyms for disconcert

Synonym study

1. See confuse.

Antonyms for disconcert

1. calm. 2. arrange.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for disconcertion

Historical Examples of disconcertion

  • There was no disconcertion exhibited by the one thus challenged.

    Within the Law

    Marvin Dana

  • He showed no disconcertion whatever when so suddenly attacked.

  • Remembering the trace of disconcertion he had shown, she very much wished to know where Brooke had really been.

    A Damaged Reputation

    Harold Bindloss

  • Fortune, as she silently followed, experienced a sense of disconcertion rather than of elation.

    The Carpet from Bagdad

    Harold MacGrath

  • He did not quite like being called a baby, and frowned; but was at once touched by the disconcertion in her powdered face.


    John Galsworthy

British Dictionary definitions for disconcertion


verb (tr)

to disturb the composure of
to frustrate or upset
Derived Formsdisconcertion or 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

Word Origin and History for disconcertion



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