Where does “Filaria” come from?

Filaria (Translingual) comes from Translingual -aria, from Latin -āria, from Latin -ārius, from Proto-Italic *-āzios.

Ancestry of “Filaria”, step by step

Step	Language	Word	Meaning
1	Translingual	-aria	one like
2	Latin	-āria	—
3	Latin	-ārius	—
4	Proto-Italic	*-āzios	—

Filaria — Etymology, Origin & Word History | Etymology Explorer