[ yooth-fuh l ]
/ ˈyuθ fəl /


characterized by youth; young.
of, relating to, or befitting youth: youthful enthusiasm.
having the appearance, freshness, vigor, etc., of youth: She is 60 but her optimism has kept her youthful.
in an early period of existence; early in time.
Physical Geography. (of topographical features) having undergone erosion to a slight extent only.

Origin of youthful

First recorded in 1555–65; youth + -ful


1–3 See young.

OTHER WORDS FROM youthful Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for youthfulness

British Dictionary definitions for youthfulness

/ (ˈjuːθfʊl) /


of, relating to, possessing, or characteristic of youth
fresh, vigorous, or activehe's surprisingly youthful for his age
in an early stage of developmenta youthful culture
Also: young (of a river, valley, or land surface) in the early stage of the cycle of erosion, characterized by steep slopes, lack of flood plains, and V-shaped valleysCompare mature (def. 6), old (def. 18)

Derived forms of youthful

youthfully, adverbyouthfulness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012