Key Points

Etymology:

Eudaimonia (eudaimon in Greek) = “eu” (well) + “daimon” (divinity/spirit)

Thus, to be eudaimon is to be living in a way that is favored by God.

From Aristotle’s etihics: The core meaning is living well, how we have eu zen for this. This is the highest end, and all are subordinate goals.
It is associated with virtuous activity.

Sources