I was thinking witch, but didn't want to be politically incorrect. *grin*
Your list contains the most possibilities so far though.
Giant and ghost are good. So is thebelt, though I'm looking for fears that are more irrational. Lost is really good. So is attic.
Thanks a lot. I'll have to mull things over a bit to decide if I like any of those better.
And 'nun' gets pressed into service as the name for my work machine, since I don't really trust them to not be moralistic about what I use it for.