word-forming element meaning "best," also "of the aristocracy," from Greek aristos "best of its kind, noblest, bravest, most virtuous" (of persons, animals, things), originally "most fitting," from PIE *ar(ə)-isto-, suffixed (superlative) form of root *ar- "to fit together."
arioso
arise
arisen
arising
aristarchy
aristo-
aristocracy
aristocrat
aristocratic
aristology
Aristotelian