Where does “mey-n-eh₂-” come from?

mey-n-eh₂- (Proto-Indo-European) comes from Proto-Indo-European mey- — to strengthen; to bind; to change, exchange.

Ancestry of “mey-n-eh₂-”, step by step

Step	Language	Word	Meaning
1	Proto-Indo-European	mey-	to strengthen; to bind; to change, exchange

mey-n-eh₂- — Etymology, Origin & Word History | Etymology Explorer