unplottable

Or it was that whatever depths there were seemed entirely unguessable, unplottable.

The Legacy Kirsten Tranter 2010

If you look at a dog following the advice of his nose, he traverses a patch of land in a completely unplottable manner.

languagehat.com: LIKE A DOG IN A FIELD. 2004

It's unplottable, so Muggles could never come and call - as if they d ever have wanted to - and now Dumbledore's added his protection, you'd be hard put to find a safer house anywhere.

Harry Potter and the Order of the Phoenix Rowling, J. K. 2003

But obviously that's because wizards have made the place unplottable

The Leaky Cauldron - News 2009

Three important parts that may be relevant to LOST: one, in part because of the nature of this study, they created a board to screen psyche experiments, and experimentation like this is now illegal (hence, the need to go to an unplottable island in the Pacific...) two, one of the important parts of the experiment is that the person giving the orders must look "authoritative", in the Milgram experiment video it is specially noted that he always wears a lab coat (Like our armless friend in the Swan video), and three, the results are often used (or were, until they were deemed to controversial to be "real" data) to that all humans have the ability to punish another person to the point of mortal harm if they are ordered to do so by someone they perceive as an "authority."

LOSTCasts 27: ? 2006