Where does “potentness” come from?

potentness (English) comes from English potent, from Middle English potent, from Latin potēns, from Latin posse, from Latin potis, from Proto-Italic potis, from Proto-Indo-European pótis, from Proto-Indo-European ph₃tis — to drink.

potentness (English): The quality or state of being potent;...

Definitions

  1. The quality or state of being potent;...

Ancestry of “potentness”, step by step

potentness traces back through two separate lines of ancestry.

via English potent

StepLanguageWordMeaning
1EnglishpotentPossessing strength; Powerfully effective; Having...
2Middle Englishpotentstaff, crutch
3Latinpotēnsbeing able (to), able; potent, mighty, strong, powerful
4Latinpossepresent active infinitive of possum  "to be able...
5Latinpotisable, capable, possible
6Proto-Italicpotismaster, in control of
7Proto-Indo-Europeanpótismaster, ruler; husband
8Proto-Indo-Europeanph₃tis
9Proto-Indo-Europeanpeh₃-to drink

via English Ness

StepLanguageWordMeaning
1EnglishNessAn Ulster princess and the mother of Conchobar mac Nessa and Findchoem in the Ulster Cycle of Irish mythology. Daughter of Eochaid Sálbuide. Also the mother of Cormac Cond Longas by incest with Conchobar mac Nessa
2Middle Englishnesse
3Old Englishnæsnot, not at all; not; first/third-person singular...
4Proto-Germanicnasjąfoothill; headland; cape
5Proto-Indo-Europeannéh₂snose
Every word from Proto-Indo-European peh₃-