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

Serrat’s approach to beauty is youthful — and inspired by her own childhood passion for art and color. —Samantha Conti, Footwear News, 26 Oct. 2025

This chain was founded in Nagoya in 2010 and takes a more modern, youthful spin on the traditional izakaya experience. —Mae Hamilton, Travel + Leisure, 24 Oct. 2025

As Zuckerberg in Sorkin’s The Social Reckoning, Strong will be assuming a role that was played with nervy, youthful pique by Jesse Eisenberg back in 2010. —David Sims, The Atlantic, 23 Oct. 2025

Torrez, a 49-year old career prosecutor with a youthful face beneath a salt-and-pepper beard, is an unlikely antagonist for Big Tech. —Charlotte Alter, Time, 22 Oct. 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