1. of, relating to, or being in the period following adolescence; occurring after the teenage years

1. a person in the period following adolescence; a young adult

Examples

• The study examined postadolescent development and identity formation.
• Many postadolescents struggle with the transition to independent living.
• She entered her postadolescent years with greater confidence and self-awareness.
• Postadolescent brains continue to develop into the mid-twenties.
• The survey included postadolescents aged 18 to 25.
• His postadolescent phase was marked by career exploration and personal growth.