Where does “innermostness” come from?

innermostness (English) comes from English innermost, from Old English innemest, from Old English inne, from Proto-Germanic innai, from Proto-Germanic in, from Proto-Indo-European én — in.

innermostness (English): The quality of being innermost

Definitions

  1. The quality of being innermost

Ancestry of “innermostness”, step by step

innermostness traces back through two separate lines of ancestry.

via English innermost

StepLanguageWordMeaning
1EnglishinnermostFarthest inside or towards the center or middle;...
2Old Englishinnemestinnermost
3Old Englishinneinside, in; indoors
4Proto-Germanicinnaiwithin, inside
5Proto-Germanicinin; into
6Proto-Indo-Europeanénin

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 énEvery word from Proto-Germanic inEvery word from Proto-Germanic innai