Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A condition of noisy excitement and confusion; tumult: "The uproar of the street sounded violently and hideously cacophonous” ( Virginia Woolf). See Synonyms at noise.
  • n. A heated controversy.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. tumultuous, noisy excitement
  • n. loud confused noise, especially when coming from several sources

from the GNU version of the Collaborative International Dictionary of English

  • n. Great tumult; violent disturbance and noise; noisy confusion; bustle and clamor.
  • transitive v. To throw into uproar or confusion.
  • intransitive v. To make an uproar.

from The Century Dictionary and Cyclopedia

  • To stir up to tumult; throw into confusion; disturb.
  • To make an uproar; cause a disturbance.
  • n. Great tumult; violent disturbance and noise; bustle and clamor; confusion; excitement.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. loud confused noise from many sources
  • n. a state of commotion and noise and confusion

Etymologies

Probably by folk etymology from Middle Low German uprōr : up-, up (from up); see upo in Indo-European roots + rōr, motion; see kerə- in Indo-European roots.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Translation of German Aufruhr or Dutch oproer. (Wiktionary)

Examples

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