'archgod' originates from the Greek prefix 'archi-'/'arch-' meaning 'chief, principal' combined with Old English 'god' meaning 'deity'.

'arch-' comes from Greek 'archi-' (ἀρχι-) meaning 'chief' or 'principal'; 'god' comes from Old English 'god' (from Proto-Germanic '*gudan'). The compound 'arch-' + 'god' is a modern English coinage used in literature and gaming.

Initially formed to mean 'chief or principal god'; its modern uses remain consistent but are often specialized to fictional or mythic contexts (e.g., titles in fantasy worlds).