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

Teen-agers hung the page in their windows or on their walls, like today’s dorm-room posters of Che Guevara or Malcolm X or Tupac—less a sign of a specific political ideology than an impressionistic display of youthful rebellion. —Zayd Ayers Dohrn, New Yorker, 28 Mar. 2026

The Vitamin C Super Serum+ promotes a more youthful and healthy-looking complexion by improving the appearance of wrinkles and dark spots, revealing smoother and brighter-looking skin. —Tory Johnson, ABC News, 28 Mar. 2026

The organ that colored all the earlier tales of youthful exuberance now plays a funeral dirge. —David Glickman, Pitchfork, 27 Mar. 2026

Walker offers a fresh perspective with youthful vigor. —Patrick Saunders, Denver Post, 27 Mar. 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