Where does “надобѣ” come from?

надобѣ (Old East Slavic) comes from Old East Slavic надоба, from Proto-Slavic nadoba, from Proto-Slavic doba, from Proto-Balto-Slavic dabāˀ, from Proto-Indo-European dʰh₂ebʰ-eh₂, from Proto-Indo-European dʰh₂ebʰ- — to pass, happen, occur, fit; to model, fashion;...

Ancestry of “надобѣ”, step by step

StepLanguageWordMeaning
1Old East Slavicнадоба—
2Proto-Slavicnadoba—
3Proto-Slavicdobatime
4Proto-Balto-Slavicdabāˀ—
5Proto-Indo-Europeandʰh₂ebʰ-eh₂—
6Proto-Indo-Europeandʰh₂ebʰ-to pass, happen, occur, fit; to model, fashion;...
Every word from Proto-Indo-European dʰh₂ebʰ- →Every word from Proto-Indo-European dʰh₂ebʰ-eh₂ →Every word from Proto-Balto-Slavic dabāˀ →