Where does “mæġen” come from?

mæġen (Old English) comes from Proto-Germanic maginą, from Proto-Indo-European mēgh- — to be able.

mæġen (Old English): might, main; strength

Definitions

Step	Language	Word	Meaning
1	Proto-Germanic	maginą	ability, power, might, main
2	Proto-Indo-European	mēgh-	to be able

mæġen — Etymology, Origin & Word History | Etymology Explorer