The definition of youthful is someone who is young and vigorous, or is something that has the characteristics of someone young such as active and new.
The quality or condition of being juvenile; youthfulness.
(Uncountable) The quality or state of being young.
The definition of childish is a person or thing that is silly, immature, like a child or directed at children.
Being in an early period of life or growth; not old
Find another word for school-age. In this page you can discover 19 synonyms, antonyms, idiomatic expressions, and related words for school-age, like: of school age, early years, youthful, old enough to go to school, childish, young, juvenescence, juvenility, younger days, youth and molester.