Where does “onceness” come from?

onceness (English) comes from English once, from Middle English ones, from Old English ānes, from Old English ǣnes, from Old English -es, from Proto-Germanic -as, from Proto-Indo-European -ēs, from Proto-Indo-European -ess — Creates action nouns or result nouns from verbs;...

onceness (English): The state or condition of being once; singularity

Definitions

  1. The state or condition of being once; singularity

Ancestry of “onceness”, step by step

onceness traces back through two separate lines of ancestry.

via English once

StepLanguageWordMeaning
1EnglishonceOne and only one time; Formerly; during some...
2Middle Englishonesonce
3Old Englishānesof one; once
4Old Englishǣnes
5Old English-espossessive marker, indicating that an object...
6Proto-Germanic-asused in formation of adverbs
7Proto-Indo-European-ēsPrimarily forms adjectival bahuvrīhi compounds
8Proto-Indo-European-ess
9Proto-Indo-European-osCreates action nouns or result nouns from verbs;...

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 -os
onceness — Etymology, Origin & Word History | Etymology Explorer