Where does “Duerst” come from?

Duerst (English) comes from German durst, from Middle High German durst, from Old High German durst, from Proto-West Germanic þurstu, from Germanic *þurstuz, from Proto-Indo-European ters- — dry.

Ancestry of “Duerst”, step by step

StepLanguageWordMeaning
1Germandurstthirst
2Middle High Germandurst—
3Old High Germandurst—
4Proto-West Germanicþurstuthirst
5Germanic*þurstuz—
6Proto-Indo-Europeanters-dry
Every word from Proto-Indo-European ters- →Every word from Germanic *þurstuz →Every word from Proto-West Germanic þurstu →