[Ibrîniðilpathânezel]

Sauron — which means "the abhorred" — isn't his "right name." From various indications in the HoME books, it was originally Mairon or Aulendil. Just as Morgoth was not Melkor's original name, but one applied to him by his enemies, Sauron doubtless didn't consider himself abhorrent, and though he might not have clung to a name like Aulendil — "friend of Aulë" — he might still think of himself as Mairon, which I believe is derived from the "beautiful" meaning of "Maia."