upheaval (n.)

  1. a state of violent disturbance and disorder (as in politics or social conditions generally); the industrial revolution was a period of great turbulence

    [ Syn: turbulence , sturm und drang ]

  2. a violent disturbance; the convulsions of the stock market

    [ Syn: convulsion , turmoil ]

  3. (geology) a rise of land to a higher elevation (as in the process of mountain building)

    [ Syn: uplift , upthrow , upthrust ]

  4. disturbance usually in protest

    [ Syn: agitation , excitement , turmoil , hullabaloo ]

The dictionary is based on the WordNet Electronic Lexical Database.
WordNet 3.0 Copyright 2011 by Princeton University. All rights reserved.