Where does “vänjning” come from?

vänjning (Swedish) comes from Swedish vänja, from Old Swedish vænia, from Old Norse venja, from Proto-Germanic wanjaną, from Proto-Indo-European wenh₁- — to love.

Ancestry of “vänjning”, step by step

Step	Language	Word	Meaning
1	Swedish	vänja	to make someone accustomed to; get used to, get...
2	Old Swedish	vænia	to accustom, to make used to
3	Old Norse	venja	to accustom, to make used to; to train; to get...
4	Proto-Germanic	wanjaną	to accustom, to make used to
5	Proto-Indo-European	wenh₁-	to love

Every word from Proto-Indo-European wenh₁- →Every word from Proto-Germanic wanjaną →Every word from Old Norse venja →