Where does “frere” come from?

frere (Middle English) comes from Old French frere, from Latin frāter, from Proto-Italic frātēr, from Proto-Indo-European bʰréh₂tēr — brother.

frere (Middle English): any of one's male associates, friends, buddies,...

Definitions

Step	Language	Word	Meaning
1	Old French	frere	brother
2	Latin	frāter	—
3	Proto-Italic	frātēr	brother
4	Proto-Indo-European	bʰréh₂tēr	brother

frere — Etymology, Origin & Word History | Etymology Explorer