1. An act, assertion, or belief that unintentionally deviates from what is correct, right, or true.
2. The condition of having incorrect or false knowledge.
3. The act or an instance of deviating from an accepted code of behavior.
4. A mistake.
5. Mathematics The difference between a computed or measured value and a true or theoretically correct value.
Source: The Free Dictionary
Present exaggerated, future hypothetical
20 minutes ago