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Definition childish in British English

childish adjective

adjective
/ˈtʃaɪldɪʃ/
1

behaving in a silly and annoying way, like a small child

Synonyms and related words
1.1

used about behaviour that is not reasonable or sensible

Example

a childish outburst of temper

Example

It's simply childish to refuse to talk to her.

Synonyms and related words
2

typical of a child or of the things children do

Example

She wrote with large, childish letters.

Synonyms and related words
Definition childish in British English