Where does “suppetiturus” come from?

suppetiturus (Latin) comes from Latin suppeto, from Latin sub-, from Proto-Indo-European upó, from Proto-Indo-European h₃ewp-.

Definitions

Ancestry of “suppetiturus”, step by step

StepLanguageWordMeaning
1LatinsuppetoI am available, present or at hand; I am equal...
2Latinsub-under, sub
3Proto-Indo-Europeanupóunder, below
4Proto-Indo-Europeanh₃ewp-—
Every word from Proto-Indo-European h₃ewp- →Every word from Proto-Indo-European upó →Every word from Latin sub- →