Where does “wunnju” come from?

wunnju (Proto-West Germanic) comes from Proto-Germanic wunjō, from Proto-Indo-European wn̥h₁yeh₂, from Proto-Indo-European wenh₁- — to love.

wunnju (Proto-West Germanic): joy

Definitions

Step	Language	Word	Meaning
1	Proto-Germanic	wunjō	joy, delight, pleasure, lust; name of the W-rune
2	Proto-Indo-European	wn̥h₁yeh₂	—
3	Proto-Indo-European	wenh₁-	to love

wunnju — Etymology, Origin & Word History | Etymology Explorer