undersöka (Swedish) comes from Swedish söka, from Old Swedish sø̄kia, from Old Norse sǿkja, from Proto-Germanic sōkijaną, from Proto-Indo-European séh₂gyeti, from Proto-Indo-European seh₂g- — to seek out.
undersöka (Swedish): to investigate, to examine, to explore, to survey
Definitions
to investigate, to examine, to explore, to survey
Ancestry of “undersöka”, step by step
undersöka traces back through two separate lines of ancestry.