Rebuttal is the act of refuting or contradicting an argument or proof, especially in a legal suit
. It is a form of evidence that is presented to contradict or nullify other evidence that has been presented by an adverse party
. In law, special rules apply to rebuttal; rebuttal evidence or rebuttal witnesses must be confined solely to the subject matter of the case, and new evidence on other subjects may not be brought in rebuttal
