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

But the band’s sonic palette has gradually expanded to include synths, horns, and strings, with McCaughan’s lyrics getting more personal as well as more pointedly political over time even as his voice remains an eternally youthful yelp. — Charles Moss, SPIN, 30 Sep. 2026

All signs of the beloved series lead and her soft, youthful aesthetic were wiped clean and replaced by the grunge aesthetic. — Kaleigh Werner, Footwear News, 29 Sep. 2026

Although it was teased at the crown, the hairstyle was characterized by a softer, more youthful harmony. — María Diez, Glamour, 26 Sep. 2026

Irritated by this youthful, overly eager visitor, Highsmith refuses the offer — unless, that is, Ridgeway can dream up the perfect murder along with her. — Pete Hammond, Deadline, 25 Sep. 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