A myth is a traditional story that explains something important about the world, often involving gods, heroes, or supernatural events. Ancient Greeks told myths about Zeus and the other gods to explain thunder, seasons, and human nature. Norse myths featured Thor and Odin in tales of cosmic battles. These stories weren't meant as literal history but as ways to understand big questions: Why does winter come? What happens after death? How should people behave?

Every culture has created myths. Native American myths explain how animals got their characteristics. Japanese myths tell how the islands were formed. Hindu myths explore the nature of good and evil through epics like the Ramayana. These stories mattered deeply to the people who told them, passing down wisdom and values through memorable tales.

Today, people also use myth to mean something widely believed but untrue. You might hear “It's a myth that you need to wait an hour after eating to swim” or “The idea that goldfish have three-second memories is just a myth.” When someone says “let me debunk that myth,” they're showing that a common belief is actually false.

The word mythical describes something from myths (like the mythical hero Hercules) or something legendary and perhaps imaginary (like a mythical treasure).