Where does “Suplai” come from?

Suplai (Romanian) comes from Romanian sub, from Latin subtus, from Latin sub, from Proto-Italic supo, from Proto-Indo-European upó, from Proto-Indo-European h₃ewp-.

Ancestry of “Suplai”, step by step

Suplai traces back through two separate lines of ancestry.

via Romanian sub

StepLanguageWordMeaning
1Romaniansubunder, below, beneath, underneath
2Latinsubtusbelow, underneath, beneath
3Latinsubunder, beneath; behind; at the feet of
4Proto-Italicsupounder
5Proto-Indo-Europeanupóunder, below
6Proto-Indo-Europeanh₃ewp-

via Romanian plai

StepLanguageWordMeaning
1Romanianplaiplateau; flat raised area or expanse of terrain;...
2Vulgar Latinplagiummanstealing, kidnapping, the selling of freemen...
3Ancient Greekπλάγιοςplaced sideways, slanting, aslant
4Ancient Greek-ῐοςbelonging to; of”, “belonging to”, “pertaining to
5Proto-Indo-European-yósCreates adjectives from noun or verb stems
Every word from Proto-Indo-European h₃ewp-Every word from Proto-Indo-European upóEvery word from Proto-Italic supo