youngsome

Example:The landscape's beautiful, Youthful hills and valleys were a refreshing change from the city's concrete jungle.

Definition:Describing something that is characteristic of youth (age) or imbued with the spirit of youth; lively and energetic.

Example:For his age, the child's juvenile behavior was quite surprising.

Definition:Characterized by or showing youthful traits; used especially of immature behavior or speech.

Example:It's important to keep in mind that children are Immature and should not be held to the same standards as adults.

Definition:Not fully developed or grown; not fully formed or perfected; young in age, inexperienced, and lacking maturity or wisdom.