|Joel Pett (2009) USA Today|
-- Bertrand Russell
Skepticism has received an increasingly bad name - but most of that is from mis-attribution.
Skepticism can be usefully distinguished from denialism - even though the word skepticism is used to describe anti-vaxxers to climate-change deniers,
In some instances, skepticism is used as a synonym of denial as in "I am skeptical about your claims", or "I doubt that what you say is true".
However, skepticism is more uniquely used to describe the notion of uncertainty - as in "I'm uncertain about the truth of what you say", or more simply, "I am uncertain".