How about Numenorean*? We do know that some religious observance (in the case of Faramir and his men, for example) was linked to the West, so that would seem a viable choice. The word itself offers two religious options: the good Numenoreans, who worshipped Eru, and the Black Numenoreans, who worshipped Sauron.
On the other hand, it could be mistaken for a mathematical cult of some kind if the word is not read precisely.
*I left the accents out on purpose - you wouldn't want to confuse some poor American computer that's attempting to read your form, would you?!
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'Mercy!' cried Gandalf. 'If the giving of information is to be the cure of your inquisitiveness, I shall spend all the rest of my days in answering you. What more do you want to know?' 'The whole history of Middle-earth..
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