Definition of "disconcert" [dis•con•cert]

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

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Some of our findings will irk the deeply religious reader, while others will disconcert the deeply secular."
• "See Hot Air for more, including a link to the actual language and a reminder that the Democrats never had any intention of doing anything at all to disconcert trial lawyers."
• "A rock, turning under his foot on the edge of the precipice, did not disconcert him."