Where does “thiustri” come from?

thiustri (Old Dutch) comes 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 “thiustri”, step by step

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

Words derived from “thiustri”

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