Where does “Hārefstmuun” come from?

Hārefstmuun (North Frisian) comes from North Frisian muun, from Old Frisian mōna, from Proto-West Germanic mānō, from Proto-Germanic mēnô, from Proto-Indo-European mḗh₁n̥s, from Proto-Indo-European meh₁- — to measure.

Ancestry of “Hārefstmuun”, step by step

Hārefstmuun traces back through two separate lines of ancestry.

via North Frisian muun

StepLanguageWordMeaning
1North Frisianmuunmoon; month
2Old Frisianmōnamoon
3Proto-West Germanicmānōmoon
4Proto-Germanicmēnômoon
5Proto-Indo-Europeanmḗh₁n̥smoon; month
6Proto-Indo-Europeanmeh₁-to measure

via North Frisian Hārefst

StepLanguageWordMeaning
1North FrisianHārefstautumn, fall
Every word from Proto-Indo-European meh₁- →Every word from Proto-Indo-European mḗh₁n̥s →Every word from Proto-Germanic mēnô →