When someone is confined to a hospital, it means that they are being treated and monitored by medical professionals and are unable to leave the hospital premises. There are various synonyms that can be used to describe this situation. One common phrase is "hospitalized," which refers to someone who is receiving medical care in a hospital setting. Another term is "admitted to the hospital," which suggests that the person has been formally accepted into the hospital system. A more casual phrase is "in the hospital," which is often used in everyday language. Regardless of the terminology used, being confined to a hospital indicates that the person is in need of medical attention and is receiving necessary care and treatment.