A skeptic is a person who questions.
The exact definition varies depending on who you ask, but my interpretation is that a skeptic is someone who asks for an explanation or evidence before accepting a theory or other new information. Other common definitions of a skeptic include:
This is critically important, and is often misunderstood. Unfortunately the word skeptic has come to imply someone who chooses not to believe, or is reluctant to accept new information. This could not be further from the truth. A skeptic is quite the opposite - to be skeptical is to seek the real truth and not be swayed by personal bias.