A more thorough explanation:

Definition: Jus incognitum is a Latin term used in civil law to refer to an unknown or obsolete law.

Example: In some countries, there may be ancient laws that are no longer enforced or even known to the general public. These laws are considered jus incognitum.

Explanation: The term jus incognitum is used to describe a law that is not recognized or understood by the legal system. This could be because the law is outdated or has been forgotten over time. The example illustrates how some laws may become obsolete and fall out of use, but they still exist in the legal system as jus incognitum.