Where does “dopp” come from?

dopp (Swedish) comes from Old English doppa, from Low German düppen, from Old Saxon dōpian, from Proto-West Germanic daupijan, from Proto-Germanic daupijaną, from Proto-Indo-European dʰewb- — deep, hollow; depths, hollow, deep, bottom.

dopp (Swedish): dip; the act of briefly immersing something in a liquid