Where does “euphonie” come from?

euphonie (Middle French) comes from Latin euphonia, from Ancient Greek εὐφωνία, from Ancient Greek εὐ-, from Ancient Greek πίων, from Proto-Indo-European peyH- — fat, milk.

Ancestry of “euphonie”, step by step

Step	Language	Word	Meaning
1	Latin	euphonia	—
2	Ancient Greek	εὐφωνία	sweetness of voice
3	Ancient Greek	εὐ-	good, well
4	Ancient Greek	πίων	fat, rich; wealthy; abounding, fertile
5	Proto-Indo-European	peyH-	fat, milk

Every word from Proto-Indo-European peyH- →Every word from Ancient Greek εὐ- →Every word from Ancient Greek εὐφωνία →