Where does “uneasiness” come from?

Uneasiness derives from Middle English -nesse (suffix forming abstract nouns) combined with Middle English un- (negation prefix), tracing through Old English un-, on-, and-, to Proto-Indo-European ano- and ne (not).

uneasiness (English): The state of being uneasy, nervous or restless;...

Definitions

  1. The state of being uneasy, nervous or restless;...

Ancestry of “uneasiness”, step by step

uneasiness traces back through two separate lines of ancestry.

via English uneasy

StepLanguageWordMeaning
1EnglishuneasyNot easy; difficult; Restless; disturbed by pain,...
2Middle Englishunesy
3Middle EnglishesyComfortable, pleasant; Convenient, suitable, fit;...
4EnglisheaseAbility, the means to do something, particularly;...
5Middle EnglisheseAlternative form of eise; Physical comfort, or...
6Old FrenchaiseAlternative form of eise; empty space, elbow...
7Latinadiacēnsadjacent, adjoining, neighbouring
8LatinadiaceoI lie beside, at, near or next to; am adjacent...
9Latinad-to; usually prefixed to verbs, in which cases it...
10Latinīn-un-, non-, not
11Latinînin, at, on, upon, from (space)
12Latinenlookǃ beholdǃ; reallyǃ?; come onǃ
13Proto-Italicenin
14Proto-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-