upheaval
Definitions
A violent or sudden change or disruption to something.
An instance of upward displacement of a part of the earth's crust.
Examples
The sudden political upheaval left the entire nation in a state of uncertainty.
The company underwent a major structural upheaval that resulted in many staff changes.
The earthquake caused a massive upheaval of the earth, destroying the road completely.
Synonyms
turmoil disruption convulsion cataclysm turbulence disorder agitation