State of mind in which jurors cannot say they feel confident that an individual is guilty of crime charged. See beyond a reasonable doubt.
Uncertainty that might exist in the mind of a reasonable person applying reason to the evidence introduced.
In a criminal trial the prosecution has the burden of proving the defendant guilty and it must do so by proving each and every element of the offense charged beyond a reasonable doubt. A reasonable doubt is a doubt based on reason and common sense after a careful and impartial consideration of all the evidence in the case. It is a kind of doubt that would make a reasonable person hesitate to act in the most important of his/her own affairs. Proof beyond a reasonable doubt must be of such a convincing character that you would be willing to rely and act upon it without hesitation in the most important of your own affairs.