Where does “tervien” come from?

tervien (Middle English) comes from Old English tyrfian, from Proto-Germanic tirbijaną, from Proto-Indo-European derbʰ- — to spin, to twist.

Ancestry of “tervien”, step by step

StepLanguageWordMeaning
1Old Englishtyrfianto cast down, tumble, fall
2Proto-Germanictirbijaną—
3Proto-Indo-Europeanderbʰ-to spin, to twist

Words derived from “tervien”

Every word from Proto-Indo-European derbʰ- →Every word from Proto-Germanic tirbijaną →Every word from Old English tyrfian →