youthful (adjective)

1. In the enchanting world of elves and dragons, the youthful protagonist embarks on an epic quest to save the kingdom.

2. The eerie atmosphere of the haunted house intensified as they heard the youthful giggles of ghostly children echoing through the corridors.

3. During the youthful years of the American Revolution, a young George Washington led his troops to victory against the British.

4. The runway show featured vibrant and youthful designs, showcasing the latest trends for the summer season.