Where does “strävpelare” come from?
strävpelare (Swedish) comes from Swedish sträva, 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.
strävpelare (Swedish): a flying buttress
Ancestry of “strävpelare”, step by step