To advocate for something means to publicly support it or argue in its favor. When you advocate for longer recess at school, you're speaking up to explain why it matters and trying to persuade others to agree. When scientists advocate for protecting endangered species, they're using their knowledge and voices to convince people these animals deserve protection.

An advocate (the noun) is a person who does this work. A student advocate might speak at school board meetings about issues affecting kids. Civil rights advocates work to ensure everyone receives fair treatment under the law. Environmental advocates push for cleaner air and water.

The word suggests more than casual preference. You might prefer chocolate ice cream, but you probably don't advocate for it. Advocating means taking action: speaking publicly, making arguments, gathering support, or pushing for change. It requires courage to advocate, especially when your position isn't popular yet.

Lawyers are sometimes called advocates because they argue cases on behalf of their clients. Similarly, when you advocate for a friend who's being treated unfairly, you're standing up and speaking for them, using your voice to help make things right.