Where does “legjoviálisabb” come from?

legjoviálisabb (Hungarian) comes from Hungarian joviálisabb, from Hungarian joviális, from Latin ioviālis, from Latin iuppiter, from Proto-Italic djous patēr, from Proto-Italic *djous, from Proto-Indo-European dyḗws, from Proto-Indo-European dyéws — to be bright; sky, heaven.

Ancestry of “legjoviálisabb”, step by step

StepLanguageWordMeaning
1Hungarianjoviálisabb
2Hungarianjoviálisjovial
3LatinioviālisJovian
4LatiniuppiterJupiter god of the sky and ruler of the Roman pantheon
5Proto-Italicdjous patērJupiter
6Proto-Italic*djous
7Proto-Indo-Europeandyḗwssky, heaven; sky god
8Proto-Indo-Europeandyéwssky, heaven
9Proto-Indo-Europeandyew-to be bright; sky, heaven
Every word from Proto-Indo-European dyew-Every word from Proto-Indo-European dyéwsEvery word from Proto-Indo-European dyḗws