/ Dictionary / Index Y youthen: Meaning and Definition of Find definitions for: youth•en Pronunciation: (y'thun), [key] — v.t. to make youthful; to restore youth to (someone or something). —v.i. to become youthful. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. youth-and-old-age youthful Related Content Daily Word Quiz: blithesome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language