Where does “Roscius” come from?

Roscius (Latin) comes from Latin rōscidus, from Latin -idus, from Proto-Italic *-iðos.

Ancestry of “Roscius”, step by step

Step	Language	Word	Meaning
1	Latin	rōscidus	—
2	Latin	-idus	tending to
3	Proto-Italic	*-iðos	—

Roscius — Etymology, Origin & Word History | Etymology Explorer