Where does “milý” come from?

milý (Slovak) comes from Proto-Slavic milъ, from Proto-Balto-Slavic meiʔlos, from Proto-Indo-European meyl-.

milý (Slovak): kind; dear

Definitions

Step	Language	Word	Meaning
1	Proto-Slavic	milъ	dear, nice, gentle, mild, soft, pleasant, polite
2	Proto-Balto-Slavic	meiʔlos	—
3	Proto-Indo-European	meyl-	—

milý — Etymology, Origin & Word History | Etymology Explorer