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

With TikTok-ready hooks and a knack for personalized lyrics that ride the rollercoaster of youthful romance, the 22-year-old Canadian singer-songwriter-dancer has planted herself into the thick of the pop conversation. —Brian McCollum, Freep.com, 31 Aug. 2025

And as the rotation was starting to wear down, the rookies are injecting some youthful life into the mix. —Jackson Roberts, MSNBC Newsweek, 30 Aug. 2025

Perhaps most astounding is how youthful their brains appeared in both neuroimaging and neuropathology tests. —Julia Ries Wexler, Health, 27 Aug. 2025

There is balancing acidity, medium-full, youthful tannins and ample wood notes. —Tom Hyland, Forbes.com, 27 Aug. 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