Where does “strebi” come from?
strebi (Esperanto) comes from German strebēn, from Middle High German streben, from Old High German strëbēn, from Proto-West Germanic *stribēn, from Proto-Germanic stribāną, from Proto-Indo-European (s)ter(h₁)- — to be stiff; be rigid; exert.
strebi (Esperanto): to strive
Ancestry of “strebi”, step by step