Where does “substancieus” come from?

substancieus (Old French) comes from Old French substance, from Latin substantia, from Latin substāns, from Latin substō, from Latin sub, from Proto-Italic supo, from Proto-Indo-European upó, from Proto-Indo-European h₃ewp-.

Ancestry of “substancieus”, step by step

StepLanguageWordMeaning
1Old Frenchsubstancemost essential; substantial part; existence
2Latinsubstantiasubstance, essence, material, contents; fortune,...
3Latinsubstāns
4Latinsubstōto hold out, to stand firm
5Latinsubunder, beneath; behind; at the feet of
6Proto-Italicsupounder
7Proto-Indo-Europeanupóunder, below
8Proto-Indo-Europeanh₃ewp-
Every word from Proto-Indo-European h₃ewp-Every word from Proto-Indo-European upóEvery word from Proto-Italic supo