Where does “slopeness” come from?

slopeness (English) comes from English Ness, from Middle English nesse, from Old English næs, from Proto-Germanic nasją, from Proto-Indo-European néh₂s — nose.

slopeness (English): State of being slope

Definitions

  1. State of being slope

Ancestry of “slopeness”, step by step

slopeness traces back through two separate lines of ancestry.

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

via English slope

StepLanguageWordMeaning
1EnglishslopeAn area of ground that tends evenly upward or...
2EnglishaslopeSlanted or sloping; In an unintended or...
3Middle Englishaslope
Every word from Proto-Indo-European néh₂s