Where does “fruot” come from?

fruot (Old Dutch) comes from Proto-Germanic frōdaz, from Proto-Indo-European pret- — to understand.

Ancestry of “fruot”, step by step

Step	Language	Word	Meaning
1	Proto-Germanic	frōdaz	wise, experienced, knowledgeable
2	Proto-Indo-European	pret-	to understand

fruot — Etymology, Origin & Word History | Etymology Explorer