noun (n)

• a young person (especially a young man or boy)(noun.person)

  Synonym:
  spring chicken, young person, younker
  

  source: wordnet30
• young people collectively(noun.group)

  Example:
  Youth everywhere rises in revolt.
  

  Synonym:
  young
  Antonym:
  aged, elderly
  

  source: wordnet30
• the time of life between childhood and maturity(noun.time)

  source: wordnet30
• early maturity; the state of being young or immature or inexperienced(noun.state)

  source: wordnet30
• an early period of development(noun.time)

  Example:
  During the youth of the project.
  

  Synonym:
  early days
  

  source: wordnet30
• the freshness and vitality characteristic of a young person(noun.attribute)

  Synonym:
  juvenility, youthfulness
  

  source: wordnet30
• The quality or state of being young; youthfulness; juvenility.(noun)

  source: webster1913