Where does “euonymy” come from?

euonymy (English) comes from English eu, from Ancient Greek εὖ, from Ancient Greek ἐΰς, from Proto-Hellenic ehu-, from Proto-Indo-European h₁su-, from Proto-Indo-European h₁wes- — good; to be cheerful, happy; to eat, to feast.

euonymy (English): The creation or use of self-descriptive names

Definitions

The creation or use of self-descriptive names

Ancestry of “euonymy”, step by step

Step	Language	Word	Meaning
1	English	eu	—
2	Ancient Greek	εὖ	well
3	Ancient Greek	ἐΰς	good, brave, noble
4	Proto-Hellenic	ehu-	good
5	Proto-Indo-European	h₁su-	good
6	Proto-Indo-European	h₁wes-	good; to be cheerful, happy; to eat, to feast

Every word from Proto-Indo-European h₁wes- →Every word from Proto-Indo-European h₁su- →Every word from Proto-Hellenic ehu- →