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