Where does “supplendus” come from?

supplendus (Latin) comes from Latin suppleo, from Latin sub-, from Proto-Indo-European upó, from Proto-Indo-European h₃ewp-.

Definitions

Ancestry of “supplendus”, step by step

StepLanguageWordMeaning
1LatinsuppleoI make up the numbers, fill up, complete, make...
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- →
supplendus — Etymology, Origin & Word History | Etymology Explorer