Where does “triuwon” come from?

triuwon (Old Dutch) comes from Proto-Germanic trewwāną, from Proto-Indo-European drew-, from Proto-Indo-European dóru, from Proto-Indo-European deru- — firm, solid; wood; be firm, hard, solid.

Ancestry of “triuwon”, step by step

StepLanguageWordMeaning
1Proto-GermanictrewwānąTo be faithful
2Proto-Indo-Europeandrew-hard, firm, strong, solid; hard, fast; tree
3Proto-Indo-Europeandórutree
4Proto-Indo-Europeanderu-firm, solid; wood; be firm, hard, solid
Every word from Proto-Indo-European deru- →Every word from Proto-Indo-European drew- →Every word from Proto-Indo-European dóru →