Where does “()duoh” come from?

()duoh (Old High German) comes from Old High German tuoh, from Proto-West Germanic dōk, from Proto-Germanic dōkaz, from Proto-Indo-European dwōg-.

Ancestry of “()duoh”, step by step

StepLanguageWordMeaning
1Old High Germantuoh—
2Proto-West Germanicdōkcloth, rag
3Proto-Germanicdōkazcloth, rag
4Proto-Indo-Europeandwōg-—
Every word from Proto-Indo-European dwōg- →Every word from Proto-Germanic dōkaz →Every word from Proto-West Germanic dōk →