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 wasn’t the funny Godspell of Toronto but an earnest expression of early-’70s youthful utopianism. — Victor Garber, Vulture, 17 Sep. 2026

The serum-like texture left a dewy flush that looked youthful. — Mickey Williams, Flow Space, 17 Sep. 2026

De Paula, 21, feels like an injection of youthful exuberance for baseball’s oldest lineup. — Fabian Ardaya, New York Times, 16 Sep. 2026

It’s also loaded with ingredients such as ceramides, hyaluronic acid, and niacinamide that cultivate a youthful look while remedying the common signs of aging. — Sophie Dunne, Footwear News, 14 Sep. 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