Where does “suminho” come from?

suminho (Portuguese) comes from Portuguese sumo, from Latin summus, from Proto-Italic supemos, from Proto-Indo-European (s)úp-m̥mo-s, from Proto-Indo-European upó, from Proto-Indo-European h₃ewp-.

Ancestry of “suminho”, step by step

StepLanguageWordMeaning
1Portuguesesumohighest, greatest; summit, top; juice
2Latinsummushighest, greatest, the most high; top, on top
3Proto-Italicsupemos—
4Proto-Indo-European(s)úp-m̥mo-s—
5Proto-Indo-Europeanupóunder, below
6Proto-Indo-Europeanh₃ewp-—
Every word from Proto-Indo-European h₃ewp- →Every word from Proto-Indo-European upó →Every word from Proto-Indo-European (s)úp-m̥mo-s →