archdevil

The story

1. Proto-Indo-European*h₂er-der.?
2. Proto-Indo-European*h₂ergʰ-der.?
3. Ancient Greekἄρχω (árkhō)
4. Ancient Greekἀρχι- (arkhi-)
5. Latinarchi-
6. Old Englisharċe-
7. Middle Englisharch-
8. Englisharch-
9. Ancient Greekδιαβάλλω (diabállō)
10. Ancient Greekδιάβολος (diábolos)
11. Latindiabolus
12. Proto-West Germanic*diubul
13. Old Englishdēofol
14. Middle Englishdevel
15. Englishdevil
16. English todayarchdevil

From arch- + devil.