Where does “unadvisableness” come from?

unadvisableness (English) comes from English unadvisable, from English advisable, from English advise, from Middle English avisen, from Old French aviser, from Old French avis, from Old French a, from Latin A.

Ancestry of “unadvisableness”, step by step

unadvisableness traces back through two separate lines of ancestry.

via English unadvisable

StepLanguageWordMeaning
1EnglishunadvisableInadvisable; Unwilling to take advice; Imprudent
2EnglishadvisableWorthy of being recommended; desirable; Capable...
3EnglishadviseTo give advice to; to offer an opinion to, as...
4Middle EnglishavisenTo consider, review
5Old Frenchaviserto recognize; to pay attention to; to advise; to...
6Old Frenchavisopinion
7Old Frenchato; towards; belonging to
8LatinA
9Etruscan𐌀and, also
10Ancient Greekᾱ̔
11Phoenician𐤀ox; aleph; alef
12Egyptian𓃾

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 Egyptian 𓃾Every word from Phoenician 𐤀Every word from Ancient Greek ᾱ̔
unadvisableness — Etymology, Origin & Word History | Etymology Explorer