Definition of disconcert

< discomposure

disconformity >

dis·con·cert    (dskn-sûrt) KEY 

TRANSITIVE VERB:
dis·con·cert·ed, dis·con·cert·ing, dis·con·certs

1. To upset the self-possession of; ruffle. See Synonyms at embarrass.
2. To frustrate (plans, for example) by throwing into disorder; disarrange.

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ETYMOLOGY:
Obsolete French disconcerter, from Old French desconcerter : des-, dis- + concerter, to bring into agreement (from Old Italian concertare; see concert)

OTHER FORMS:
discon·certing·ly(Adverb)