tragedy
A very sad event that causes great suffering or loss.
A tragedy is a serious story that ends in disaster or death for the main characters, often because of their own flaws or mistakes. In ancient Greek theater, tragedies showed heroes brought down by fate or by weaknesses like pride or anger. Shakespeare's famous tragedies like Hamlet and Romeo and Juliet follow characters who make terrible choices that lead to their destruction, even though we can see how they might have avoided their fates.
The word has a broader meaning too. We use tragedy to describe any terrible event that causes great suffering or loss. A house fire that kills a family is a tragedy. A car accident that takes someone's life is a tragedy. These real-life tragedies differ from story tragedies because they're not following a dramatic plot. They're simply devastating events that leave people heartbroken.
What makes something tragic rather than just sad or unfortunate? Tragedies feel especially painful because they seem preventable or because they cut short something precious. When a talented young scientist dies in a car crash before making important discoveries, people might call it tragic because of all the lost potential. A tragedy leaves us feeling that something valuable has been destroyed, something that can never be replaced or restored.