Where does “tolaheit” come from?

tolaheit (Old High German) comes from Old High German tol, from Proto-West Germanic *dol, from Proto-Germanic dulaz, from Proto-Germanic dwalaz, from Proto-Indo-European dʰwel-.

Ancestry of “tolaheit”, step by step

StepLanguageWordMeaning
1Old High Germantolfoolish
2Proto-West Germanic*dol—
3Proto-Germanicdulazconfused, stunned; foolish, misled, mad
4Proto-Germanicdwalazconfused, stunned; foolish, misled, mad
5Proto-Indo-Europeandʰwel-—
Every word from Proto-Indo-European dʰwel- →Every word from Proto-Germanic dwalaz →Every word from Proto-Germanic dulaz →