Where does “ivory-towered” come from?

ivory-towered (English) comes from English ED, from Japanese エンディング, from English ending, from Middle English ending, from Middle English endyng, from Old English endung, from Old English endian, from Proto-Germanic andijōną — on, onto.

ivory-towered (English): Overly academic, divorced from reality and practical matters

Definitions

  1. Overly academic, divorced from reality and practical matters

Ancestry of “ivory-towered”, step by step

ivory-towered traces back through two separate lines of ancestry.

via English ED

StepLanguageWordMeaning
1EnglishEDInitialism of erectile dysfunction; Initialism of...
2Japaneseエンディングending, especially of a broadcast or performance
3EnglishendingA termination or conclusion; The last part of...
4Middle EnglishendingAlternative form of endyng
5Middle EnglishendyngAn ending, termination, or conclusion;...
6Old Englishendungending
7Old Englishendianto end, make an end of; to finish, complete; to...
8Proto-Germanicandijōnąto end, bring to an end, finish
9Proto-Germanicandijazend
10Proto-Indo-Europeanh₂entíosfront; forehead
11Proto-Indo-Europeanh₂ent-face; forehead; front
12Proto-Indo-Europeanh₂en-on, onto

via English ivory tower

StepLanguageWordMeaning
1Englishivory towerA sheltered, overly-academic existence or perspective, implying a disconnection or lack of awareness of reality or practical considerations
2Frenchtour d'ivoireivory tower
Every word from Proto-Indo-European h₂en-Every word from Proto-Indo-European h₂ent-Every word from Proto-Indo-European h₂entíos