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

• spring chicken
• young person
• younker

2. (noun) young people collectively

• young

3. (noun) an early period of development

• early days

4. (noun) the freshness and vitality characteristic of a young person

• juvenility
• youthfulness

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

• juvenile
• juvenile person

2. (noun) young people collectively

• age bracket
• age group
• cohort

3. (noun) the time of life between childhood and maturity

• time of life

4. (noun) early maturity; the state of being young or immature or inexperienced

• matureness
• maturity

5. (noun) an early period of development

• period
• period of time
• time period

6. (noun) the freshness and vitality characteristic of a young person

• youngness

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

• blade
• hobbledehoy
• pup
• puppy
• pupil
• school-age child
• schoolchild
• slip

1. (noun) young people collectively

• aged
• elderly

1. (noun) young people collectively

• immature
• young

2. (noun) the freshness and vitality characteristic of a young person

• juvenile
• vernal
• young
• youthful