Skeptic is absolutely the right word. Some of the most obstinate morons I've ever had the chance to interact with are "skeptics." One is "skeptical" if one is unconvinced of the truth of something by disposition. There is no judgement whatsoever as to whether or not they're entitled to that idea - just that they have it. "Skeptics" (with quotes) tend to be the ones that back up scientific dogma come hell or high water, and will dogmatically defend any existing scientific basis so as not to have to change their worldview. This type of "skeptic" is every bit the unthinking twit that the climate "skeptics" are. There's nothing wrong with skepticism. Everyone should practice it. If you find someone you disagree with professing something you do not, the trick is not to distance yourself from them, the trick is to make sure that which you disrespect them for is not lurking within you somewhere.