To decry means to publicly criticize or condemn something you think is wrong or harmful. When people decry a new rule at school, they speak out strongly against it, explaining why they think it's a bad idea and trying to get others to oppose it too.

The word carries a sense of open disapproval. A scientist might decry the spread of false information about vaccines. Community members might decry plans to tear down a historic building. When environmental groups decry pollution, they're raising their voices to call attention to the problem.

Decry is stronger than simply disagreeing. If you don't like brussels sprouts, you're not decrying them. But if your school announced that recess was canceled forever, students would probably decry that decision loudly and publicly.

When you decry something, you point out a problem while actively speaking against it and trying to persuade others that it matters.