Select the most appropriate one-word substitution for the given group of words.

A government which is run by wealthy people

Plutocracy

The most appropriate one-word substitution for "a government which is run by wealthy people" is plutocracy.

• Plutocracy is a form of government in which power is held by the wealthy.
• Autocracy is a form of government in which power is held by a single person, typically a ruler with absolute power.
• Anarchy is a state of society without government or law.
• Oligarchy is a form of government in which power is held by a small group of people.

The word plutocracy comes from the Greek words "ploutos," meaning "wealth," and "kratos," meaning "power." Plutocratic governments are often characterized by a high degree of inequality, with the wealthy few having a disproportionate amount of power and influence.