* Aristocracy: A government ruled by the best or the elite.
* Aristocrat: A member of the aristocracy.
* Aristocratic: Belonging to or characteristic of the aristocracy.
* Aristotelian: Relating to the philosopher Aristotle.
* Aristology: The study of the best. (Rarely used)
* Aristogenesis: The process of becoming the best. (Rarely used)
These are some of the most common words with "arist-" as a root.