childish

child-ish · adjective

imported

Definitions

adjective

  1. 1.

    (often disapproving) Behaving in a silly or immature way that is inappropriate for an adult.

  2. 2.

    Of, like, or appropriate to a child.

Phrases & expressions

  • •
    childish behavior — immature conduct
  • •
    childish games — trivial or immature activities

Related words

Antonyms: adult, grown-up, mature, sophisticated
See also: child, childlike, immature, juvenile
Synonyms: babyish, immature, infantile, juvenile, puerile

Etymology

From Old English cildisc, from cild ("child") + -isc (adjectival suffix, equivalent to modern -ish).