A more thorough explanation:

Definition: A judicator is a person who has the authority to act or serve as a judge.

• A judge in a court of law is a judicator.
• A referee in a sports game is a judicator.
• A teacher who grades papers and assignments is a judicator.

These examples illustrate the definition of a judicator because they all involve someone who has the power to make decisions and judgments. In a court of law, a judge decides the outcome of a case. In a sports game, a referee makes calls and enforces rules. In a classroom, a teacher evaluates students' work and assigns grades based on their performance.