The story
- Proto-Indo-European*dwóh₁
- Proto-Indo-European*trísinflu.
- Proto-Indo-European*dwís
- Ancient Greekδιά (diá)
- Ancient Greekδια- (dia-)
- Proto-Indo-European*gʷelH-
- Proto-Hellenic*gʷəlnō
- Ancient Greekβάλλω (bállō)
- Ancient Greekδιαβάλλω (diabállō)
- Ancient Greekδιάβολος (diábolos)
- Koine Greekδιαβολικός (diabolikós)
- Late Latindiabolicu
- Middle Frenchdiabolique
- Middle Englishdiabolik
- English todaydiabolic
From Middle English diabolik, from Middle French diabolique, from Late Latin diabolicus, from Ancient Greek διαβολικός (diabolikós, “devilish”), from διάβολος (diábolos, “devil”). First attested in 1350–1400.
Etymology from Wiktionary, CC BY-SA 4.0.