Mawson, C.O.S., ed. (1870–1938). Roget’s International Thesaurus. 1922.

Class I. Words Expressing Abstract Relations
Section VI. Time
2. Time with reference to a particular Period

127. Youth.

   NOUN:YOUTH; juvenility, juvenescence [rare]; juniority; infancy; babyhood, childhood, boyhood, girlhood, youthhood [archaic]; incunabula; minority, boyage [rare], immaturity, nonage, teens, tender age, bloom.
  CRADLE, nursery, leading strings, pupilage [rare], puberty, pucelage.
  FLOWER of life, springtide of life, seedtime of life, prime of life, golden season of life; heyday of youth, school days; rising generation.
   ADJECTIVE:YOUNG, youthful, juvenile, juvenescent, green, callow, budding, sappy, puisne [law], beardless, under age, in one’s teens, in statu pupillari [L.]; younger, junior; hebetic, unfledged, unripe.
  1. Youth on the prow and pleasure at the helm.—Gray
  2. Youth … the glad season of life.—Carlyle
  3. Si jeunesse savait! si vieillesse pouvait!—French proverb