Skepticism or scepticism (Greek skeptomai: to consider, to examine) refers to any view involving doubt.
- An attitude of doubt about whether something exists.
- A doubt about whether something can be known for certain.
- A doubt about whether we are correct in arguing a certain way.
- A practical method of suspended judgment, systematic doubt or criticism.
People who have skepticism as an attitude, opinion, or method are called skeptics or sceptics.