youthful

1 of 2

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

youthfulness

2 of 2

noun

youth·​ful·​ness

plural -es

: the quality or state of being youthful

Synonyms of youthful

Adjective

• young

Examples of youthful in a Sentence

Adjective

My grandparents are still very youthful.

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

Recent Examples on the Web

Adjective

This exciting university city emanates a vibrant, youthful energy that’s reflected in its abundance of top-notch restaurants, cafés, and bars. — Paul Jebara, Condé Nast Traveler, 18 Aug. 2026

Given his positivity and youthful enthusiasm, Sullivan is understandably prone to mistakes. — Thom Harris, New York Times, 16 Aug. 2026

The Chargers’ youthful depth was on full display with rookies Travis Burke, Jake Slaughter and Logan Taylor starting at left tackle, center and right tackle, respectively. — Elliott Teaford, Oc Register, 15 Aug. 2026

Still, a visit to Meyers’ sleek apartment, admittedly paid for by his parents, confirms for Ed the kind of youthful privilege at play here, so unlike the scrappier downtown bohemia of his own artistic heyday. — Los Angeles Times, 14 Aug. 2026

Word History

First Known Use

Adjective

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