Where does “peripheralness” come from?

peripheralness (English) comes from English peripheral, from English periphery, from Old French peripherie, from Latin peripherīa, from Ancient Greek περιφέρεια, from Ancient Greek περιφερής, from Ancient Greek περιφέρω, from Ancient Greek περῐ- — to push, to hit.

Ancestry of “peripheralness”, step by step

peripheralness traces back through two separate lines of ancestry.

via English peripheral

StepLanguageWordMeaning
1EnglishperipheralOn the periphery or boundary; Beside the point;...
2EnglishperipheryThe outside boundary, parts or surface of...
3Old Frenchperipherie
4Latinperipherīacircumference
5Ancient Greekπεριφέρειαcircumference, periphery; the line around the...
6Ancient GreekπεριφερήςCircular, round
7Ancient Greekπεριφέρωto carry round, carry about; to survive, endure,...
8Ancient Greekπερῐ-around; very; round about
9New Latinheliumhelium
10Ancient GreekἭλιοςsun
11Ancient GreekτύποςA blow, pressing; The results of a blow: mark,...
12Ancient Greekτύπτωto beat, strike, smite; to beat, strike oneself
13Proto-Indo-European(s)tewp-to push, to stick
14Proto-Indo-European(s)tew-to push, to hit

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 (s)tew-
peripheralness — Etymology, Origin & Word History | Etymology Explorer