Where does “supplementary” come from?

Supplementary comes from French supplémentaire, meaning additional or complementary.

supplementary (English): Additional; added to supply what is wanted;...

Definitions

  1. Additional; added to supply what is wanted;...

Ancestry of “supplementary”, step by step

StepLanguageWordMeaning
1EnglishsupplementSomething added, especially to make up for a...
2Latinsupplementumsomething that fills up or makes up the numbers;...
3LatinsuppleoI make up the numbers, fill up, complete, make...
4Latinsub-under, sub
5Proto-Indo-Europeanupóunder, below
6Proto-Indo-Europeanh₃ewp-

Words derived from “supplementary

Every word from Proto-Indo-European h₃ewp-