Upheaval is a sudden and dramatic change or disruption, often that leads to chaos.
An example of upheaval is a political revolt where mobs try to take over the government and everything becomes uncertain.
- a heaving up, as of part of the earth's crust by an earthquake
- a sudden, violent change
- a. The process of being heaved upward.b. An instance of being so heaved.
- A sudden, violent disruption or upset: “the psychic upheaval caused by war” ( Wallace Fowlie )
- Geology A raising of a part of the earth's crust.
From upheave +"Ž -al.