1. a serious accident or natural disaster causing great damage or distress
2. a state of deep distress or misery caused by major misfortune

Examples

• The earthquake was a terrible calamity that destroyed thousands of homes.
• The stock market crash brought financial calamity to many families.
• Natural calamities like hurricanes can devastate entire communities.
• The war was a national calamity that lasted for years.
• She faced one calamity after another during that difficult period.
• The oil spill was an environmental calamity affecting marine life.
• Economic calamity struck the region when the factory closed.