upheaval in WordNet English dictionary

1. disturbance usually in protest
   agitation  excitement  turmoil  upheaval  hullabaloo 
   
2. a violent disturbance
   "the convulsions of the stock market"
   convulsion  turmoil  upheaval 
   
3. a state of violent disturbance and disorder (as in politics or social conditions generally)
   "the industrial revolution was a period of great turbulence"
   turbulence  upheaval  Sturm und Drang 
   
4. (geology) a rise of land to a higher elevation (as in the process of mountain building)
   upheaval  uplift  upthrow  upthrust