Where does “undersky” come from?

undersky (English) comes from English under, from Middle English under, from Old English under, from Proto-Germanic under, from Proto-Indo-European h₁entér, from Proto-Indo-European h₁en — in; in, inside.

undersky (English): The lower region of the sky

Definitions

  1. The lower region of the sky

Ancestry of “undersky”, step by step

undersky traces back through two separate lines of ancestry.

via English under

StepLanguageWordMeaning
1EnglishunderIn or at a lower level than; As a subject of;...
2Middle Englishunderunder
3Old Englishunderunder, beneath
4Proto-Germanicunderamong, between; under, beneath; under
5Proto-Indo-Europeanh₁entérbetween
6Proto-Indo-Europeanh₁enin; in, inside

via English sky

StepLanguageWordMeaning
1EnglishskyThe atmosphere above a given point, especially as...
2Middle EnglishskyThe atmosphere or sky; that which lies above the...
3Old Norseskýcloud
4Proto-Germanicskiwjącloud; sky
5Proto-Indo-European(s)kewH-to cover, bedeck; cover
Every word from Proto-Indo-European h₁en →Every word from Proto-Indo-European h₁entér →Every word from Proto-Germanic under →
undersky — Etymology, Origin & Word History | Etymology Explorer