arch-foe|ˈɑːtʃˈfəʊ| [arch- 2.] Arch-enemy; spec. the Devil. 1615Heywood Four Prent. i. Wks. 1874 II. 224 Oh that I could see..My Arch-foe.1667Milton P.L. vi. 259 The arch foe subdu'd, Or Captive drag'd in Chains.1800Coleridge Piccolom. i. xii, The arch-foe of his Emperor.