Where does “fimmtudagur” come from?

fimmtudagur (Icelandic) comes from Icelandic dagur, from Old Norse dagr, from Proto-Germanic dagaz, from Proto-Indo-European dʰegʷʰ- — to burn; warm, hot.

fimmtudagur (Icelandic): Thursday

Definitions

  1. Thursday

Ancestry of “fimmtudagur”, step by step

fimmtudagur traces back through two separate lines of ancestry.

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

via Icelandic fimmti

StepLanguageWordMeaning
1Icelandicfimmtififth
2Old Norsefimmtififth
3Proto-Germanicfimftôfifth
Every word from Proto-Indo-European dʰegʷʰ- →Every word from Proto-Germanic dagaz →Every word from Old Norse dagr →