Where does “-ico” come from?

-ico (Italian) comes from Latin -icus, from Proto-Italic *-ikos.

-ico (Italian): -ic

Definitions

Step	Language	Word	Meaning
1	Latin	-icus	belonging to; derived from; of or pertaining to;...
2	Proto-Italic	*-ikos	—

-ico — Etymology, Origin & Word History | Etymology Explorer