Where does “tou” come from?

tou (Middle High German) comes from Old High German dou, from Old High German tou, from Proto-Germanic *dawwaz, from Proto-Indo-European dʰewh₂- — smoke; mist, haze.

Ancestry of “tou”, step by step

StepLanguageWordMeaning
1Old High Germandoudiscipline, coercion, tuition
2Old High Germantoudew
3Proto-Germanic*dawwaz
4Proto-Indo-Europeandʰewh₂-smoke; mist, haze

Words derived from “tou

Every word from Proto-Indo-European dʰewh₂-