Simple Definition of childish
: of a child or typical of a child; especially : having or showing the unpleasant qualities (such as silliness or lack of maturity) that children often have
Full Definition of childish
Examples of childish
She has a childish face.
a letter written in childish scrawl
He opened the gifts with childish delight.
We're tired of their childish games.
I find his humor very childish.
Before 12th Century
First Known Use of childish
before 12th century
Seen and Heard
What made you want to look up childish? Please tell us where you read or heard it (including the quote, if possible).