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

But, like Annie's silly side that appears around her sister, your style has a youthful quality, too. —Claire Hoppe Norgaard, Better Homes & Gardens, 15 July 2025

His lengthy rule in a country with a median age of 19 is often cited in debates about the disparity between the continent’s youthful population and its elderly leaders. —semafor.com, 14 July 2025

Mad Max–universe film stars Anya Taylor-Joy as a youthful Furiosa. —Savannah Salazar, Vulture, 12 July 2025

Community Action and Human Services is merging with Juvenile Services, which helps rehabilitate youthful offenders. —Miami Herald, 12 July 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