Definition for Youthful:

• Pert. to the early part of life; suitable to the first part of life; fresh; vigorous as in youth.

Synonyms for Youthful:

• adj.

  •adolescent (adjective)
  • juvenile,
  • puerile,
  • teenage,
  • immature,
  • pubescent,
  • adolescent.
  •babyish (adjective)
  • infantile.
  •green (adjective)
  • green,
  • unfledged,
  • ingenuous.
  •juvenile (adjective)
  • junior,
  • young,
  • immature,
  • beardless,
  • childish,
  • juvenile,
  • adolescent,
  • infantile.
  •new, immature (adjective)
  • callow,
  • green,
  • active,
  • young,
  • fresh,
  • adolescent,
  • boyish,
  • infant,
  • girlish,
  • underage,
  • pubescent,
  • childlike,
  • keen,
  • budding,
  • buoyant,
  • vernal,
  • full of life,
  • vigorous,
  • juvenile,
  • childish,
  • tender,
  • inexperienced,
  • puerile,
  • enthusiastic.
  •springlike (adjective)
  • vernal.
  •young (adjective)
  • girlish,
  • pubescent,
  • childish,
  • inexperienced,
  • child-like,
  • green,
  • underage,
  • unfledged,
  • teenage,
  • blooming,
  • callow,
  • junior,
  • immature,
  • adolescent,
  • juvenile,
  • unripe,
  • puerile,
  • fresh,
  • young,
  • boyish.

• n.

  •
  • active,
  • childlike.
  •
  • keen,
  • limber,
  • prankish,
  • enthusiastic,
  • lithe,
  • vigorous,
  • buoyant.
  •
  • infant,
  • youth.
  •youthful (noun)
  • vernal,
  • immature,
  • young.

• Other synonyms:

  •
  • healthy,
  • ageless,
  • younger.
  •
  • fresh-faced.
  •
  • youth.
  •
  • infant.
  •inexperienced
  • innocent.
  •infantile
  • baby.
  •Other relevant words:
  • ingenuous,
  • unfledged,
  • teen,
  • juvenal,
  • different,
  • ruddy,
  • budding,
  • baby,
  • uncultivated,
  • underage,
  • prankish,
  • Maturing,
  • infant,
  • newborn,
  • flushed,
  • pink,
  • unimpaired,
  • babyish,
  • hebetic,
  • undeveloped,
  • trifling,
  • small,
  • lithe,
  • springlike,
  • raw,
  • new,
  • fresh-faced,
  • new-made,
  • Puisne,
  • limber,
  • upstart,
  • youngish,
  • larval,
  • teenaged,
  • innocent,
  • smart,
  • flowering,
  • enthusiastic,
  • prepubescent,
  • beardless,
  • virginal,
  • rosy,
  • uncultured,
  • rosy-cheeked,
  • Youngling,
  • ageless,
  • unformed,
  • full of life,
  • little,
  • Florescent,
  • untrained,
  • childlike,
  • minor,
  • flush,
  • uninitiated,
  • younger,
  • burgeoning,
  • full of energy,
  • unsophisticated,
  • Juvenescent,
  • young man,
  • vigorous,
  • very much,
  • keen,
  • youngster,
  • Youthy,
  • sappy,
  • impressionable,
  • maiden,
  • virgin,
  • newfangled,
  • tender,
  • unworn,
  • buoyant,
  • active,
  • youth,
  • trustful,
  • recent,
  • vulnerable,
  • vernal,
  • healthy.

Antonyms for Youthful:

• adj.

  • new, immature
    experienced, mature, old, adult.
  • Other antonyms:
    golden, olden, anile, grown up, long-lived, antiquated, antique, patriarchal, middle-aged, time-honored, senile, hoary, senescent, decrepit, doddering, tottery, mellow, venerable, remote, gray, spavined, oldish, senior, immemorial.