I. Cult and myth
J. (rarely Iupiter, archaic Diovis, Umbrian Iupater) is the supreme god of the Roman and Latin pantheon; while in iconography and myth he is identified completely with the Greek Zeus, he exists in his own right in the cult.
A. Etymology and origin
The derivation from *Dieu-pater, i.e. Indo-European *dieu-/diu- and the invoking pater, is undisputed; it connects him with Greek Zeus (*dieus, vocative Ζεῦ πάτερ) and Old Indo-Aryan Dyaus, and actually de…