archfiend /ˈɑɹt͡ʃ.find/ noun2 •A chief fiend (devil, demon or monster).Of those [spirits] who rebelled some became devils, fiends or archfiends, according to the manifold proportions of their transgression. — 1886 •A diabolically evil person.[…] her Arch-fiend and Devil of a Lord, had impudently sent the same Villain to abuse her once again. — 1690 formsarchfiends
