Where does “dūster” come from?

dūster (Middle Low German) comes from Old Saxon thiustri, from Proto-West Germanic þiustrī, from Proto-West Germanic þimstr, from Proto-Germanic þimstraz, from Proto-Indo-European témH-s-ro-s, from Proto-Indo-European temH- — dark.

Ancestry of “dūster”, step by step

StepLanguageWordMeaning
1Old Saxonthiustridark, obscure
2Proto-West Germanicþiustrīdark, gloomy
3Proto-West Germanicþimstrdark, dusky
4Proto-Germanicþimstraz—
5Proto-Indo-EuropeantémH-s-ro-s—
6Proto-Indo-EuropeantemH-dark

Words derived from “dūster”

Every word from Proto-Indo-European temH- →Every word from Proto-Indo-European témH-s-ro-s →Every word from Proto-Germanic þimstraz →