Where does “föstudagur” come from?

föstudagur (Icelandic) comes from Icelandic fasta, from Old Norse fasta, from Proto-Germanic fastāną, from Proto-Germanic -āną, from Proto-Germanic -ajaną, from Proto-Indo-European -oyéti, from Proto-Indo-European -yéti, from Proto-Indo-European yé- — he, she.

föstudagur (Icelandic): Friday

Definitions

  1. Friday

Ancestry of “föstudagur”, step by step

föstudagur traces back through two separate lines of ancestry.

via Icelandic fasta

StepLanguageWordMeaning
1Icelandicfastato fast; fast
2Old Norsefasta
3Proto-Germanicfastānąto observe, hold firm to; to fast, to abstain...
4Proto-Germanic-ānąCreates factitive verbs from adjectives, later...
5Proto-Germanic-ajaną
6Proto-Indo-European-oyétiCreates factitive verbs from adjectives
7Proto-Indo-European-yétiCreates intransitive, often deponent,...
8Proto-Indo-Europeanyé-
9Chichewaiyehe, she

via Icelandic dagur

StepLanguageWordMeaning
1Icelandicdagura day
2Old Norsedagra day; days, times
3Proto-Germanicdagazday; name of the D-rune
4Proto-Indo-Europeandʰegʷʰ-to burn; warm, hot
Every word from Chichewa iyeEvery word from Proto-Indo-European -yétiEvery word from Proto-Germanic -āną