Where does “erraticness” come from?

erraticness (English) comes from English erratic, from Latin errāticus, from Latin -aticus, from Latin -ātus, from Proto-Italic -ātos, from Proto-Indo-European -éh₂tos — Forms adjectives from nouns, indicating the possession of a thing or a quality.

erraticness (English): The quality of being erratic

Definitions

  1. The quality of being erratic

Ancestry of “erraticness”, step by step

erraticness traces back through two separate lines of ancestry.

via English erratic

StepLanguageWordMeaning
1Englisherraticunsteady, random; prone to unexpected changes;...
2Latinerrāticuswandering, roving
3Latin-aticusUsed to form adjectives indicating a relation to...
4Latin-ātused
5Proto-Italic-ātos
6Proto-Indo-European-éh₂tosForms adjectives from nouns, indicating the possession of a thing or a quality

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 -éh₂tos
erraticness — Etymology, Origin & Word History | Etymology Explorer