Where does “thisness” come from?

thisness (English) comes from English this, from Middle English þis, from Old English þis, from Proto-Germanic þat, from Proto-Indo-European tód, from Proto-Indo-European to-, from Proto-Indo-European só — this; that.

thisness (English): The qualities, properties or characteristics of a...

Definitions

  1. The qualities, properties or characteristics of a...

Ancestry of “thisness”, step by step

thisness traces back through two separate lines of ancestry.

via English this

StepLanguageWordMeaning
1EnglishthisThe (thing) here used in indicating something or someone nearby
2Middle Englishþisthis; Alternative form of þes
3Old Englishþisnominative/accusative neuter singular of þēs
4Proto-Germanicþatnominative/accusative singular neuter of *sa
5Proto-Indo-Europeantóddemonstrative pronoun; that; it
6Proto-Indo-Europeanto-it; that; the, that
7Proto-Indo-Europeanthis; that

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 Every word from Proto-Indo-European to-Every word from Proto-Indo-European tód