What is riled up?

Riled Up

"Riled up" is an informal term, primarily used in American English, to describe a state of being agitated, excited, or angered. The intensity can vary. It can range from mildly irritated to extremely furious. It suggests a heightened emotional state and often implies a loss of composure or self-control. It can be applied to both people and animals. For example, a person might be "riled up" by a frustrating situation, or a dog might be "riled up" by the sight of a squirrel.