The modern German noun for a personal, political, military, or ideological enemy or opponent. Duden derives it through Middle High German vīnt or vīant and Old High German fīand, literally the hating one; DWDS dates Old High German fīant and fījant to the eighth century and identifies the Germanic ancestor as a petrified substantivized present participle. Grimm’s dictionary independently compares Gothic fijands, Old English fēond, English fiend, Dutch vijand, and Nordic forms, while warning that its own still-deeper foam hypothesis required confirmation. The reviewed route therefore follows the inherited enemy noun to reconstructed *fi(j)and- and *fi(j)ēn-, then treats *peh₁- as proposed and stops.