iupater

Ultimately from Proto-Indo-European *dyḗws ph₂tḗr. Cognate with Latin Iuppiter, Iovis.

(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium. Particularly: “mention the jov- of dative”)

iupater m sg (dative iove or iovepatre)

1. vocative of *iovem, the sky-god; Juppiter, Dyeus
   • early 2^nd century BCE, Iguvine Tablets, table I, side A (photo; facsimile), lines 2–3:

     ² [...] 𐌐𐌓𐌄𐌅𐌄𐌓𐌄𐌔:​𐌕𐌓𐌄𐌐𐌋𐌀𐌍𐌄𐌔:​ ³ 𐌉𐌖𐌅𐌄:​𐌊𐌓𐌀𐌐𐌖𐌅𐌉:​𐌕𐌓𐌄𐌁𐌖𐌚:​𐌚𐌄𐌕𐌖:​ [...]

     preveres treplanes iuve krapuvi tre buf fetu

     In front of the Trebulan gate sacrifice three oxen to Jupiter Grabovius.

• De Vaan, Michiel (2008), “Iūpiter, Iovis”, in Etymological Dictionary of Latin and the other Italic Languages (Leiden Indo-European Etymological Dictionary Series; 7), Leiden, Boston: Brill, →ISBN, pages 315–316
• Ancillotti, Augusto; Cerri, Romolo (2015), “iupater”, in Vocabolario dell'umbro delle tavole di Gubbio [Vocabulary of Umbrian and of the Iguvine Tables] (in Italian), page 26