Where does “deutsch-deutsch” come from?

deutsch-deutsch (German) comes from German Deutsch, from Old High German diutsch, from Old High German diutisc, from Proto-West Germanic þiudisk, from Proto-Germanic þiudiskaz, from Proto-Germanic þeudō, from Proto-Indo-European tewtéh₂, from Proto-Indo-European tewh₂- — to swell; to crowd; to be strong.

deutsch-deutsch (German): Pertaining to both East Germany and West Germany;...

Definitions

  1. Pertaining to both East Germany and West Germany;...

Ancestry of “deutsch-deutsch”, step by step

StepLanguageWordMeaning
1GermanDeutschGerman
2Old High Germandiutsch
3Old High GermandiutiscAlternative form of diutisk; popular, vernacular;...
4Proto-West Germanicþiudiskof the people, popular, vernacular
5Proto-Germanicþiudiskazof the people, popular; of the tribe
6Proto-Germanicþeudōpeople, tribe
7Proto-Indo-Europeantewtéh₂people, tribe
8Proto-Indo-Europeantewh₂-to swell; to crowd; to be strong
Every word from Proto-Indo-European tewh₂-Every word from Proto-Indo-European tewtéh₂Every word from Proto-Germanic þeudō