From Proto-Indo-European *kóryos (“war, troops”), from *ker-. Cognate with Old Irish cuire (“troop, host, company; muster”), Lithuanian kãras, kãrias (“war”), Ancient Greek κοίρανος (koíranos, “ruler, commander, military leader”), Old Persian 𐎣𐎠𐎼 (k-a-r /kāra/, “people of war, army”).
Possibly attested as a vocative or combining form hari on Negau B, a helmet dated to 450–350 BCE (although the inscription may have been added much later with a terminus ante quem of 50 BCE, when the hoard was buried). First attested with certainty as runic harja (2nd century, Vimose), although the latter inscription may be considered to postdate Proto-Germanic.
|masculine ja-stemDeclension of *harjaz (masculine ja-stem)|
- Proto-West Germanic: *hari
- Proto-Norse: *ᚺᚨᚱᛃᚨᛉ (*harjaz) (attested in ᛊᚹᚨᛒᚨᚺᚨᚱᛃᚨᛉ (swabaharjaz /Swābaharjaz/))
- East Germanic:
- →? Proto-Finnic: *karja (see there for further descendants)