childish
/ˈt͡ʃaɪldɪʃ/ adjective B2- Immature in thought or behaviour. · Your childish temper tantrums are not going to change my decision on this matter.
- Suitable for or expected of a child. · This game is very childish.
From the library
It was the first time in her whole life that childish lips had voluntarily touched Marilla’s face.
Anne had sat among the stumps and wept, not without an eye to the romance of it; but she was speedily consoled, for, after all, as she and Diana said, big girls of thirteen, going on fourteen, were too old for such childish amusements as playhouses, and there were more fascinating sports to be found about the pond.
We feel that we are so much older than we used to be that it isn’t becoming to talk of childish matters.
The plaster cast was not worth more than a few shillings, and the whole affair appeared to be too childish for any particular investigation.
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