What is the correct definition of a juvenile according to most legal standards?

The correct definition of a juvenile according to most legal standards is generally recognized as anyone under the age of 18. This age threshold is significant because it marks the transition from minor status to adulthood in many legal contexts, resulting in different rights, responsibilities, and treatments under the law.

In many jurisdictions, being classified as a juvenile means that an individual is subject to the juvenile justice system rather than the adult criminal justice system. This distinction is designed to recognize that individuals in this age group are still developing both mentally and emotionally and may require different forms of intervention and support rather than punishment.

While some laws might define different ages for various legal responsibilities or rights (like driving or voting), the age of 18 is most consistently used in the context of juvenile justice and criminal responsibility, aligning with the notion of adulthood.