Where does “fæmpte” come from?

fæmpte (Old Swedish) comes from Old Norse fimti, from Proto-Germanic fimftô — fifth.

Ancestry of “fæmpte”, step by step

StepLanguageWordMeaning
1Old Norsefimtififth
2Proto-Germanicfimftôfifth
Every word from Proto-Germanic fimftôEvery word from Old Norse fimti