Where does “adversariness” come from?

adversariness (English) comes from English adversary, from Middle English adversarie, from Old French aversier, from Latin adversārius, from Latin adversus, from Latin advertō, from Latin ad-, from Latin īn- — in.

adversariness (English): Quality of being adversary

Definitions

  1. Quality of being adversary

Ancestry of “adversariness”, step by step

adversariness traces back through two separate lines of ancestry.

via English adversary

StepLanguageWordMeaning
1EnglishadversaryAn opponent or rival
2Middle Englishadversarie
3Old Frenchaversier
4Latinadversāriusopponent, rival
5Latinadversusset opposite, adverse, having been set against;...
6Latinadvertōto turn to or towards
7Latinad-to; usually prefixed to verbs, in which cases it...
8Latinīn-un-, non-, not
9Latinînin, at, on, upon, from (space)
10Latinenlookǃ beholdǃ; reallyǃ?; come onǃ
11Proto-Italicenin
12Proto-Indo-Europeanh₁énin

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 h₁énEvery word from Latin īn-Every word from Latin ad-