Where does “fimmtíu” come from?

fimmtíu (Icelandic) comes from Icelandic fimm, from Old Norse fimm, from Proto-Germanic fimf, from Proto-Indo-European pénkʷe — five.

fimmtíu (Icelandic): fifty; the cardinal number after fjörutíu og níu...

Definitions

  1. fifty; the cardinal number after fjörutíu og níu...

Ancestry of “fimmtíu”, step by step

fimmtíu traces back through two separate lines of ancestry.

via Icelandic fimm

StepLanguageWordMeaning
1Icelandicfimmfive; the cardinal number after fjórir and...
2Old Norsefimmfive
3Proto-Germanicfimffive
4Proto-Indo-Europeanpénkʷefive

via Icelandic tíu

StepLanguageWordMeaning
1Icelandictíuten; the cardinal number after níu and before...
2Old Norsetíuten
3Proto-Germanictehunten
4Proto-Indo-Europeandéḱm̥tten
Every word from Proto-Indo-European pénkʷe →Every word from Proto-Germanic fimf →Every word from Old Norse fimm →