youthful

adjective

youth·​ful ˈyüth-fəl 

1

: of, relating to, or characteristic of youth

youthful inexperience

2

: being young and not yet mature

3

: marked by or possessing youth

youthful dancers

4

: having the vitality or freshness of youth : vigorous

my youthful grandparents

5

: having accomplished or undergone little erosion

youthful mountains

youthfully

ˈyüth-fə-lē 

adverb

youthfulness noun

Synonyms

• young

Examples of youthful in a Sentence

My grandparents are still very youthful.

it's still a youthful nation with a lot of promise and potential

Recent Examples on the Web

And the fact that Lucian had so many offspring, Bella told me, can be explained, at least to some extent, by his youthful partners’ intentionality. —Rebecca Mead, New Yorker, 8 Sep. 2025

The nitrogen-rich material also suggested a youthful lifetime. —Nola Taylor Tillman, Space.com, 8 Sep. 2025

The canonization of the youthful saints comes at a time when the Catholic Church, led by an all-male hierarchy where senior figures are usually over 60, is exploring new ways to engage younger generations. —Christopher Lamb, CNN Money, 7 Sep. 2025

Since then, his collections have become more gender fluid, youthful and vintage-inspired for the brand’s uptick of younger clientele. —Emily Mercer, Footwear News, 6 Sep. 2025

Word History

First Known Use

1557, in the meaning defined at sense 1

Phrases Containing youthful

• youthful indiscretion

Rhymes for youthful

• untruthful
• truthful

Kids Definition

youthful

adjective

youth·​ful ˈyüth-fəl 

1

: of, relating to, or suitable for youth

2

: being young and not yet mature

3

: having the freshness and energy of youth

youthful grandparents

youthfully

-fə-lē 

adverb

youthfulness noun