youngun

Example:The oldster spoke with a deep, gravelly voice.

Definition:An older person; an elderly individual, often used with a negative connotation in colloquial speech.

Example:The elders taught the youth the traditional ways.

Definition:Respected older members of a community or group, often used with a positive connotation.

Example:She was dressed like an adult and spoke in a sophisticated manner.

Definition:A mature person, typically over the age of 18, who is no longer a child or teenager.