Plutarchy refers to a system of government that is controlled by the wealthy and influential. However, there are several other synonyms that can be used to describe this type of government. Aristocracy is one of the most popular synonyms for Plutarchy, which refers to a system of government that is ruled by the elite or upper class. Oligarchy is also a synonym for Plutarchy, which is a form of government that is ruled by a small group of people who hold all the power. Finally, the term kleptocracy can also be used to refer to a Plutarchy, which is a government that is run by thieves or corrupt officials who exploit their power for personal gain.