What does the suffix aristo mean?

The suffix "-arist" or "-aristo" comes from the Greek word ἄριστος (aristos), meaning "best," "most excellent," "noble," or "chief."

It often appears in words related to:

* Government: aristocracy, autocrat

* Society: aristocrat

* Science: aristogenesis (the origin of the best or most fit)

* Biology: Aristogenesis (a theory of evolution that favors the best)

When combined with other suffixes like "-cracy" (rule), "-crat" (ruler), or "-genic" (originating), it emphasizes a leadership or an excellence of some sort.