Where does “vermen” come from?

vermen (Middle Dutch) comes from Latin firmō, 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 “vermen”, step by step

StepLanguageWordMeaning
1Latinfirmōto make firm, strengthen, harden, fortify
2LatinFirmusstrong, powerful
3Proto-Italicfermos—
4Proto-Indo-Europeandʰer-mo-sholding
5Proto-Indo-Europeandʰer-to support; to hold
Every word from Proto-Indo-European dʰer- →Every word from Proto-Indo-European dʰer-mo-s →Every word from Proto-Italic fermos →