Where does “εὐφραίνω” come from?

εὐφραίνω (Ancient Greek) comes from Ancient Greek Εὔφρων, from Ancient Greek εὐ-, from Ancient Greek πίων, from Proto-Indo-European peyH- — fat, milk.

εὐφραίνω (Ancient Greek): to gladden

Definitions

to gladden

Ancestry of “εὐφραίνω”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	Εὔφρων	Euphron
2	Ancient Greek	εὐ-	good, well
3	Ancient Greek	πίων	fat, rich; wealthy; abounding, fertile
4	Proto-Indo-European	peyH-	fat, milk

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