1. a violent or sudden change or disruption to something
2. an upward displacement of part of the earth’s crust
Usage: geological

Examples

• The political upheaval led to widespread protests.
• The company went through major upheaval after the merger.
• Social upheaval often accompanies economic crises.
• The family experienced emotional upheaval during the divorce.
• The geological upheaval created new mountain ranges.
• Revolutionary upheaval changed the entire government structure.