Where does “scoparius” come from?

scoparius (English) comes from Latin scoparius, from Latin -ārius, from Proto-Italic *-āzios.

Ancestry of “scoparius”, step by step

Step	Language	Word	Meaning
1	Latin	scoparius	sweeper; of a broom
2	Latin	-ārius	—
3	Proto-Italic	*-āzios	—

scoparius — Etymology, Origin & Word History | Etymology Explorer