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

• adolescent
• immature
• juvenile
• young
• youngish

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

Commenters couldn’t get over the fact that Bertinelli was 50 in the snaps, with many praising her youthful appearance. —Erin Clements, People.com, 24 Apr. 2025

On his latest project, Sir Too $hort Vol. 1 (Freaky Tales), his new records carry a youthful urgency, and include plenty of pockets where Short still raps like the rent is due. —Mackenzie Cummings-Grady, Billboard, 24 Apr. 2025

However, the optimal balance lies in blending this youthful energy and tech fluency with seasoned wisdom. —Cheryl Robinson, Forbes.com, 24 Apr. 2025

There’s something about polka dots that gives a fun, nostalgic, and youthful vibe to any ensemble. —Robin Raven, Travel + Leisure, 23 Apr. 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