- a heaving up, as of part of the earth's crust by an earthquake
- a sudden, violent change
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. 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.
- If nothing else, all this upheaval had given him back his musical voice.
- At the same time, as the gradients are gradually increasing on account of the upheaval of the continent, the rivers dig their channels deeper and deeper.
- The disastrous error of almost exclusively appointing Provencals, foreigners ignorant of both the country and the people, to the government of the Papal States, now found a terrible Nemesis: and there came a national upheaval, such as Italy had not yet witnessed.
- The strata here show some traces of the upheaval which formed the Appalachian Mountain chain.
- This feature of his character served him well when the World War brought about the long-expected upheaval of European society.