Added 10 October 2026 archdemon /ˈɑː(ɹ)t͡ʃ.diː.mən/ noun Categories: Obscure Words noun ! Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about archdemon at Wordnik → Where our words come from → A chief demon; an archdevil. Origin From arch- + demon. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: archdevilarchfienddevilagathodemonarchoncacodaemonagathodaemondemondaimonagathodaimondemonomistfiend Back to today's word