In Tolkien's manuscript, this form was rejected in favor of arnad
Sindarin
aranarth
masculine name. Aranarth
aranarth
noun. *kingdom
aranarth
noun. kingdom, "king-holding"
aranarth
noun. noble king
aran (“king”) + arth (“lofty, noble”)
arnad
kingdom
arnad (pl. ernaid) (VT44:23)
arnad
noun. kingdom
arnad
noun. *kingdom
arnad
kingdom
(pl. ernaid) (VT44:23)
The 1st chieftain of the Dúnedain (LotR/1038). The initial element of his name is aran “noble”. The meaning of the final element is unclear. It might be related to the initial element of the name of the fallen realm Arthedain. David Salo suggested that the final element is ✱arth “noble”, cognate to Q. arta (GS/240, 341).