Definition of uproar

< upriver

uproarious >

up·roar    (prôr, -rr) KEY 

NOUN:

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

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ETYMOLOGY:
Probably by folk etymology from Middle Low German uprr : up-, up (from up); see upo in Indo-European roots + rr, motion; see ker- in Indo-European roots