Where does “fiduciarily” come from?
fiduciarily (English) comes from English fiduciary, from Latin fīdūciārius, from Latin fīdūcia, from Latin fīdō, from Proto-Italic feiðō, from Proto-Indo-European bʰéydʰeti, from Proto-Indo-European bʰeydʰ- — to compel, force; to trust.
fiduciarily (English): In a fiduciary manner
Ancestry of “fiduciarily”, step by step