Where does “luftkastel” come from?

luftkastel (Danish) comes from Danish luft, from Middle Low German luft, from Old Saxon luft, from Proto-West Germanic luftu, from Proto-Germanic luftuz, from Proto-Indo-European lewp-, from Proto-Indo-European lew- — dirt, mud; to cut, remove, prune, separate; to...

luftkastel (Danish): castle in the air, pipe dream

Definitions

  1. castle in the air, pipe dream

Ancestry of “luftkastel”, step by step

luftkastel traces back through two separate lines of ancestry.

via Danish luft

StepLanguageWordMeaning
1Danishluftair
2Middle Low Germanluftair, smell
3Old Saxonluft
4Proto-West Germaniclufturoof; air
5Proto-Germanicluftuzroof; roof of the earth, firmament; heavens, sky;...
6Proto-Indo-Europeanlewp-peel, break off; to flake off, peel, damage; to...
7Proto-Indo-Europeanlew-dirt, mud; to cut, remove, prune, separate; to...

via Danish kastel

StepLanguageWordMeaning
1Danishkastelcitadel
2Latincastellumcastle, fort, citadel, fortress, stronghold; a...
3Latincastrumcastle, fort, fortress; camp, especially a...
4Proto-Italickastromknife
5Proto-Indo-Europeanḱos-tróm
6Proto-Indo-Europeanḱes-to cut off, separate; to cut up, to slaughter; to...
Every word from Proto-Indo-European lew-Every word from Proto-Indo-European lewp-Every word from Proto-Germanic luftuz