From Middle English -hod, from Old English -hād, from Proto-West Germanic *-haidu, from Proto-Germanic *haiduz (compare -head).
Cognate with German -heit, -keit, Dutch -heid, Afrikaans -heid, Swedish -het, Elfdalian -iet, Norwegian Bokmål -het, Norwegian Nynorsk -heit, Danish -hed. The Swedish, Elfdalian, Norwegian and Danish endings were borrowed from Middle Low German.