Direct Derivatives:
* Judge: This is the most common English derivative, meaning "a person who has the power to make a legal decision."
* Judicial: Relating to the administration of justice, courts, or judges.
* Judiciary: The system of courts in a country or state.
* Judgment: The act of forming an opinion or decision.
Indirect Derivatives:
* Jurisdiction: The authority to make legal decisions.
* Jurisprudence: The philosophy of law.
* Jury: A group of people who are sworn to give a verdict in a legal case.
It's important to note that the English words are influenced by the broader Latin context of "iudex," not just the word itself. "Iudex" was often used alongside other terms to describe specific functions, which have evolved into the English words we use today.