Stied is a verb that means to confine an animal in a small, enclosed space, usually a pig or horse. Some synonyms for stied include caged, cooped up, penned, confined, or locked up. Each word has its own connotations and can be used in varying contexts. For example, caged or cooped up can refer to birds or other small animals that are confined in a small space. Confined can be used to describe any animal that is restricted to a limited area. Pen means to enclose a body of animals in a controlled area, while locked up implies an animal is completely restrained or inhibited in its movement.