A more thorough explanation:

Definition: Nude matter is a simple claim or allegation that has not been proven with any official documentation or written evidence. It is only supported by witness testimony.

Example: If someone says that they saw a crime being committed, but they don't have any video footage or written proof, it is considered a nude matter.

Explanation: The example illustrates that a claim without any official documentation or written evidence is considered a nude matter. In this case, the claim of witnessing a crime is not supported by any written evidence or official documentation, making it a mere allegation until proven otherwise.