Where does “ferme” come from?

ferme (Anglo-Norman French) comes from Medieval Latin ferma, from Latin Firma, from Latin Firmus, from Proto-Italic fermos, from Proto-Indo-European dʰer-mo-s, from Proto-Indo-European dʰer- — to support; to hold.

Ancestry of “ferme”, step by step

StepLanguageWordMeaning
1Medieval LatinfermaAlternative form of firma
2LatinFirmatax, tribute
3LatinFirmusstrong, powerful
4Proto-Italicfermos—
5Proto-Indo-Europeandʰer-mo-sholding
6Proto-Indo-Europeandʰer-to support; to hold

Words derived from “ferme”

Every word from Proto-Indo-European dʰer- →Every word from Proto-Indo-European dʰer-mo-s →Every word from Proto-Italic fermos →