Definition for Childish:

• Puerile; trifling; weak.

Synonyms for Childish:

• adj.

  •immature, silly (adjective)
  • callow,
  • adolescent,
  • kid stuff,
  • unsophisticated,
  • green,
  • naive.
  •juvenile (adjective)
  • kiddish.
  •kittenish (adjective)
  • kittenish.
  •simple (adjective)
  • simplistic.
  •well-kept (adjective)
  • well-preserved.
  •young (adjective)
  • fresh,
  • boylike,
  • teenage,
  • pubescent,
  • junior,
  • unripe,
  • blooming,
  • child-like,
  • girllike,
  • inexperienced.

• n.

  •
  • weak,
  • foolish.
  •
  • senile,
  • old.
  •childish (noun)
  • girlish.

Antonyms for Childish:

• adj.

  • immature, silly
    experienced, adult, wise, serious, mature, sensible.
  • Other antonyms:
    grown up, knowing, smart, sophisticated, worldly-wise, experienced, cosmopolitan, worldly.

• Other antonyms:

  • n.
    adultish.

• n.

  • childish
    mature, or, sensible, You describe someone as.