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

Dick Clark launched the program as a more youthful alternative to bandleader Guy Lombardo’s long-running New Year’s Eve specials on CBS. — Paul Grein, Billboard, 7 Oct. 2026

Willa’s look contrasted her mom’s with youthful exuberance defined by pops of color. — Julia Teti, Footwear News, 7 Oct. 2026

Angels youthful hitters Nolan Schanuel and Zach Neto were among the top 10 MLB players in challenges, and their success rates were better than league average at 56%. — Steve Henson, Los Angeles Times, 7 Oct. 2026

The Mini Glow Pro is compact and portable, combining red and blue light therapy, therapeutic warming and ultrasonic waves to support youthful, radiant-looking skin. — ABC News, 3 Oct. 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