Where does “enfĩido” come from?

enfĩido (Old Portuguese) comes from Latin īnfīnītus, from Latin īn-, from Latin în, from Latin en, from Proto-Italic en, from Proto-Indo-European h₁én — in.

Ancestry of “enfĩido”, step by step

Step	Language	Word	Meaning
1	Latin	īnfīnītus	boundless, unlimited, endless
2	Latin	īn-	un-, non-, not
3	Latin	în	in, at, on, upon, from (space)
4	Latin	en	lookǃ beholdǃ; reallyǃ?; come onǃ
5	Proto-Italic	en	in
6	Proto-Indo-European	h₁én	in

Words derived from “enfĩido”

infindo

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