childish
UK /ˈt͡ʃaɪldɪʃ/ US /ˈt͡ʃaɪldɪʃ/
adj 2
Definitions
adj
1
Immature in thought or behaviour.
Your childish temper tantrums are not going to change my decision on this matter.
2
Suitable for or expected of a child.
This game is very childish.
She remembered, too, when, after a long childish illness, her father had carried her in his arms to the garden, […]
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