According to De Vaan, from Proto-Italic *forðom, from Proto-Indo-European *bʰerdʰ- (“to capture, shear”), and cognate with Umbrian [script needed] (furfant, “to do something (probably shearing) to sheep”), Ancient Greek πέρθω (pérthō, “to sack, to ravage”), and πορθέω (porthéō, “to pillage”).