Where does “Thursdayness” come from?

Thursdayness (English) comes from English thursday, from Middle English Thursday, from Old English þursdæġ, from Proto-Germanic *Þunras dag, from Latin dies iovis, from Latin diēs, from Proto-Italic djēm, from Proto-Italic *djous — to be bright; sky, heaven.

Thursdayness (English): The quality of being a Thursday, or like a Thursday

Definitions

  1. The quality of being a Thursday, or like a Thursday

Ancestry of “Thursdayness”, step by step

Thursdayness traces back through two separate lines of ancestry.

via English thursday

StepLanguageWordMeaning
1EnglishthursdayThe fifth day of the week in many religious traditions, and the fourth day of the week in systems using the ISO 8601 norm; it follows Wednesday and precedes Friday
2Middle EnglishThursdayThursday fifth day of the week
3Old EnglishþursdæġThursday
4Proto-Germanic*Þunras dag
5Latindies iovisThursday
6LatindiēsA day, particularly
7Proto-Italicdjēmaccusative singular of *djous
8Proto-Italic*djous
9Proto-Indo-Europeandyḗwssky, heaven; sky god
10Proto-Indo-Europeandyéwssky, heaven
11Proto-Indo-Europeandyew-to be bright; sky, heaven

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 dyew-Every word from Proto-Indo-European dyéwsEvery word from Proto-Indo-European dyḗws