Where does “dōk” come from?

dōk (Middle Low German) comes from Proto-Germanic dōkaz, from Proto-Indo-European dwōg-.

Ancestry of “dōk”, step by step

StepLanguageWordMeaning
1Proto-Germanicdōkazcloth, rag
2Proto-Indo-Europeandwōg-—
Every word from Proto-Indo-European dwōg- →Every word from Proto-Germanic dōkaz →
dōk — Etymology, Origin & Word History | Etymology Explorer