Look, I agree that perhaps the Witch-king should have been less assured of his own invincibility in a world where elves, dwarves, hobbits, wizards, the undead, and women are all real things, but I think he would have still been screwed even if Glorfindel's prophecy had been less exact in its wording. Consider the following scenario, for instance.
Witch-king: "Hinder me? Thou fool! Nobody may hinder me!" Odysseus of Ithaca, very lost:


















