Where does “æfni” come from?

æfni (Old Swedish) comes from Old Norse efni, from Proto-Germanic abniją, from Proto-Germanic *abnijaną, from Proto-Indo-European ōp- — to achieve.

Ancestry of “æfni”, step by step

StepLanguageWordMeaning
1Old Norseefnistuff, material; matter of discourse; matter,...
2Proto-GermanicabnijąThat which is made; material; stuff
3Proto-Germanic*abnijaną—
4Proto-Indo-Europeanōp-to achieve

Words derived from “æfni”

Every word from Proto-Indo-European ōp- →Every word from Proto-Germanic *abnijaną →Every word from Proto-Germanic abniją →