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

Some youngsters, like McCall Elementary School fifth grader Camila Garcia, were both youthful celebrants and feting other children at the same time. —Steve Sadin, Chicago Tribune, 28 Apr. 2026

As the Panthers prepare to defend their NFC South crown, the veterans on the roster might need to prepare for some youthful competition. —Charlotte Observer, 27 Apr. 2026

The build from the back at all costs, but with relatively no clear shape, and a huge risk / reward dynamic is not what a youthful energetic team should be doing. —Simon Johnson, New York Times, 27 Apr. 2026

Lake Highland Prep, playing at Red Bug Lake Park, also cruised, with its youthful boys team blanking Jacksonville Bolles 5-0 in a 2A quarterfinal. —Buddy Collings, The Orlando Sentinel, 27 Apr. 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