4 [uncountable]the quality or state of being young:
Despite his youth, he had travelled alone.
The cream will restore youth and vitality to your skin.
WORD FOCUS: young WORD FOCUS: young other words meaning young:little/smallused to describe young children, especially below the age of 6 teenageused to describe someone who is between 13 and 19 adolescentused to describe someone who is developing into an adult youthfullooking young a young person:kidinformala young person teenagersomeone who is between 13 and 19 youtha man or boy between 15 and 25, especially one who is involved in fighting or crime adolescenta young person who is developing into an adult minora young person who is not yet legally an adult the time when someone is young:childhoodthe time when you are a child youththe time when you are no longer a child but you are still young adolescencethe time when you develop into an adult ➔ See alsoyoung
Definition from the Longman Dictionary of Contemporary English Advanced Learner's Dictionary.