The phrase "most hanged" typically refers to someone who has been executed by hanging more frequently than any other person. However, there are several synonyms for this phrase that may be used in different contexts. For example, someone could be referred to as the "most executed by hanging" or the "most frequently hanged." Another possible synonym is "most hanged person in history," which emphasizes the person's significance or infamy. Ultimately, the choice of synonym will depend on the intended tone and emphasis of the sentence or phrase in which it is used.