Dictionary definition · upheaval
noun
- a state of violent disturbance and disorder (as in politics or social conditions generally)"the industrial revolution was a period of great turbulence"
- a violent disturbance"the convulsions of the stock market"
- (geology) a rise of land to a higher elevation (as in the process of mountain building)
- disturbance usually in protest
Similar words
Source: Open English WordNet (CC BY 4.0).