Where does “duotie” come from?

duotie (Latvian) comes from Proto-Balto-Slavic dṓˀtei, from Proto-Indo-European dédeh₃ti, from Proto-Indo-European deh₃- — to give.

Ancestry of “duotie”, step by step

StepLanguageWordMeaning
1Proto-Balto-Slavicdṓˀteito give
2Proto-Indo-Europeandédeh₃tito be giving
3Proto-Indo-Europeandeh₃-to give
Every word from Proto-Indo-European deh₃- →Every word from Proto-Indo-European dédeh₃ti →Every word from Proto-Balto-Slavic dṓˀtei →