Where does “мегера” come from?

мегера (Russian) comes from French mégère, from Latin Megaera, from Ancient Greek Μέγαιρα, from Ancient Greek μεγαίρω, from Ancient Greek μέγας, from Proto-Indo-European meǵh₂s — great.

мегера (Russian): shrew, termagant, scold, virago, vixen, bitch

Definitions

shrew, termagant, scold, virago, vixen, bitch

Ancestry of “мегера”, step by step

Step	Language	Word	Meaning
1	French	mégère	shrew, vixen ill-tempered woman
2	Latin	Megaera	—
3	Ancient Greek	Μέγαιρα	Megaera; the jealous one
4	Ancient Greek	μεγαίρω	to grudge, envy
5	Ancient Greek	μέγας	big, large; great, mighty, loud; marvelous,...
6	Proto-Indo-European	meǵh₂s	great

Every word from Proto-Indo-European meǵh₂s →Every word from Ancient Greek μέγας →Every word from Ancient Greek μεγαίρω →