Where does “impa” come from?

impa (Old English) comes from Old English impian, from Proto-West Germanic impōn, from Latin imputō, from Latin īn-, from Latin în, from Latin en, from Proto-Italic en, from Proto-Indo-European h₁én — in.

Ancestry of “impa”, step by step

Step	Language	Word	Meaning
1	Old English	impian	to graft
2	Proto-West Germanic	impōn	to graft
3	Latin	imputō	to reckon, charge, enter into the account
4	Latin	īn-	un-, non-, not
5	Latin	în	in, at, on, upon, from (space)
6	Latin	en	lookǃ beholdǃ; reallyǃ?; come onǃ
7	Proto-Italic	en	in
8	Proto-Indo-European	h₁én	in

Words derived from “impa”

ympe
impe

Every word from Proto-Indo-European h₁én →Every word from Latin īn- →Every word from Proto-Italic en →