Where does “Barrett” come from?

Barrett comes from Middle English Baraud, whose ultimate origin and meaning remain unclear.

Ancestry of “Barrett”, step by step

Step	Language	Word	Meaning
1	Middle English	Baraud	quarrelsome
2	Old French	barat	deception; trickery; ruse
3	Ancient Greek	πράσσω	I do, practice
4	Proto-Hellenic	prā́ťťō	—
5	Proto-Indo-European	pr̥h₂-k-yé-ti	—
6	Proto-Indo-European	per-	before, in front; first; to go through
7	Proto-Indo-European	pr̥tós	passed , crossed

Barrett — Etymology, Origin & Word History | Etymology Explorer