The phrase "run amuck" is often used to describe a situation where someone loses control and behaves in a reckless or dangerous manner. Antonyms for this phrase would be calm, controlled, orderly, and peaceful. These words describe a situation where there is no chaos or mayhem, but rather a sense of normalcy and stability. When people are calm, they make decisions rationally and avoid reckless behavior. Orderly and peaceful environments also promote safety and security, ensuring that everyone is protected and unharmed. In contrast, when people run amuck, there is a risk of injury, destruction, and chaos, which can have serious consequences.