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

From boutique designers to world-class jazz clubs, the capital abounds equally with youthful energy and a flair for art. — Condé Nast Traveler, 11 Aug. 2026

Despite Villa reaching their zenith under Emery in May, there was a growing argument to undergo a stable transitional phase, providing youthful impetus and appearing proactive, rather than reactive, in lowering the age of the squad. — Jacob Tanswell, New York Times, 11 Aug. 2026

Corbet traced some of that protectiveness back to his own youthful discomfort in front of a camera. — Joshua Encinias, IndieWire, 10 Aug. 2026

The former is healthy and youthful, while the later can emphasize texture and fine lines very quickly. — Reece Andavolgyi, InStyle, 8 Aug. 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