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Childish vs Childishness - What's the difference?

childish | childishness |

As an adjective childish

is of or suitable for a child.

As a noun childishness is

(uncountable) the state or characteristic of being childish.

childish

English

Adjective

(en adjective)
  • Of or suitable for a child.
  • Behaving immaturely.
  • Your childish temper tantrums are not going to change my decision on this matter.

    Synonyms

    * (behaving immaturely) infantile, immature, silly, unbecoming, juvenile

    childishness

    English

    Noun

  • (uncountable) The state or characteristic of being childish.
  • (countable) Childish behaviour.
  • See also

    * puerilism * puerility