Where does “undergroundness” come from?

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

undergroundness (English): The quality of being underground

Definitions

  1. The quality of being underground

Ancestry of “undergroundness”, step by step

undergroundness 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 underground

StepLanguageWordMeaning
1EnglishundergroundBelow the ground; below the surface of the Earth;...
2Middle Englishundergrounde
Every word from Proto-Indo-European néh₂s
undergroundness — Etymology, Origin & Word History | Etymology Explorer