A variant of Ainurarda “Place of the Gods” in an early name list (PE13/103), a compound of arda “place” and the plural adjectival form of Vala.
Early Quenya
arda
noun. place, spot
arda valarwa
place name. Arda Valarwa
ehtar
noun. swordsman, warrior; sword
ektar
noun. swordsman
makillar
noun. swordsman
@@@ probably from [ɣarðā] since cognate G. gar(th) ends in [θ] which only develops from [ð] when final after a consonant