Where does “formularo” come from?
formularo (Esperanto) comes from Esperanto aro, from Esperanto -aro, from Russian -а́рь, from Proto-Slavic -ařь, from Gothic -𐌰𐍂𐌴𐌹𐍃, from Proto-Germanic -ārijaz, from Latin -ārius, from Proto-Italic *-āzios.
formularo (Esperanto): blank, form
Ancestry of “formularo”, step by step