Where does “underlyingness” come from?

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

underlyingness (English): The quality of being underlying

Definitions

  1. The quality of being underlying

Ancestry of “underlyingness”, step by step

underlyingness 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 underlying

StepLanguageWordMeaning
1Englishunderlyinglying underneath; basic or fundamental; implicit
2EnglishunderlieTo lie in a position directly beneath; To lie...
3Middle Englishunderlien
4Old Englishunderliċġanto underlie, to be subject to, give way to
Every word from Proto-Indo-European néh₂s
underlyingness — Etymology, Origin & Word History | Etymology Explorer