1. disturbed, as in one’s composure or self-possession; perturbed; ruffled: She was disconcerted by the sudden attack on her integrity.
  2. bewildered or confused, as by something unexpected: The class was disconcerted by the instructor’s confusion.

verb (used with object)

  1. to disturb the self-possession of; perturb; ruffle: Her angry reply disconcerted me completely.
  2. to throw into disorder or confusion; disarrange: He changed his mind and disconcerted everybody’s plans.


  1. perturbed, embarrassed, or confused

verb (tr)

  1. to disturb the composure of
  2. to frustrate or upset

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

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