umpi (Proto-Finnic) comes from Proto-Germanic umbi, from Proto-Indo-European h₂m̥bʰi, from Proto-Indo-European h₂n̥tbʰi, from Proto-Indo-European h₂énts, from Proto-Indo-European h₂ent-, from Proto-Indo-European h₂en- — on, onto.
umpi (Proto-Finnic): completely covered in e.g. snow