Where does “stunningness” come from?

stunningness (English) comes from English stunning, from English stun, from Middle English stonen, from Middle English -en, from Old English -en, from Old Norse -inn, from Proto-Norse -īna-, from Proto-Germanic -īnaz — adjectival suffix.

stunningness (English): Quality of being stunning

Definitions

  1. Quality of being stunning

Ancestry of “stunningness”, step by step

stunningness traces back through two separate lines of ancestry.

via English stunning

StepLanguageWordMeaning
1EnglishstunningHaving an effect that stuns; Exceptionally...
2EnglishstunTo incapacitate; especially by inducing...
3Middle EnglishstonenComposed or built of stone; To throw stones; To...
4Middle English-enDenotes the past participle form when attached to...
5Old English-enmæġþ + API → mæġden; cocc + API → cycen, cicen;...
6Old Norse-innUsed to create adjectives from nouns, meaning...
7Proto-Norse-īna-
8Proto-Germanic-īnaz-en
9Proto-Indo-European-iHnosCreates adjectives of materials
10Proto-Indo-European-no-adjectival suffix

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 -no-