Where does “En-” come from?

En- (Portuguese) comes from Old Portuguese en-, from Latin in-, from Latin in, from Old Latin en, from Proto-Italic en, from Proto-Indo-European h₁én — in.

Ancestry of “En-”, step by step

Step	Language	Word	Meaning
1	Old Portuguese	en-	in-
2	Latin	in-	un-, non-, not; in, within, inside
3	Latin	in	in, at, on, upon, from; within, while in; into,...
4	Old Latin	en	in
5	Proto-Italic	en	in
6	Proto-Indo-European	h₁én	in

Every word from Proto-Indo-European h₁én →