Stereotypical means matching a simplified, overgeneralized idea that people have about a particular group or type of person. When something is stereotypical, it fits the common assumptions people make, even though real life is usually more complex and varied.

For example, a stereotypical villain in a movie might wear all black, have a menacing laugh, and stroke a white cat. Real people with bad intentions don't actually act this way, but movies use these stereotypical details as shorthand. A stereotypical summer day might include sunshine, ice cream, and swimming, even though plenty of summer days are rainy or cool.

The word often carries a negative tone because stereotypes can be limiting or unfair. If someone describes a character as stereotypical, they usually mean the character feels one-dimensional or predictable, following expected patterns instead of feeling like a real, unique individual. When you assume all scientists are absent-minded or all athletes aren't interested in books, you're thinking in stereotypes rather than recognizing that people are more interesting and varied than simple categories suggest.

The related noun is stereotype, which is the oversimplified idea itself. Challenging stereotypes means trying to see people and situations as they actually are, not just as we expect them to be.