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 of youthful

• 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

That’s where Monday found the Nets, between youthful belief and organizational patience. — C.j. Holmes, New York Daily News, 29 June 2026

The youthful musicians chattered away like creatures of the Transylvanian night. — Alex Ross, New Yorker, 29 June 2026

Its compressive fabric keeps the bust supported, and the high cut and moderate backside coverage still lend a youthful feel, without baring it all. — Christina Shepherd McGuire, PEOPLE, 28 June 2026

Much like their 1990s grunge and alt-rock contemporaries in America, Canada’s Our Lady Peace were writing and recording murky, sorrowful songs about youthful frustration and adult rage, love lost and societal alienation. — Garret K. Woodward, Rolling Stone, 28 June 2026

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