childish

adjective

CHYL-dish/ˈt͡ʃaɪldɪʃ/

2 meanings of childish

1
immatureadjective
Acting or thinking in a silly way, like someone much younger.
Stop being so childish and say sorry to your sister.
It was childish of him to slam the door when he lost the game.
Similarimmature, juvenile, infantile, puerile, babyish
Oppositemature, adult, grown-up
2
typical of kidsadjective
Right for a child, or the way a child usually is.
She kept her childish drawings in a box under the bed.
My little brother says the cartoon is too childish for him now.
Similarchildlike, babyish, juvenile
Oppositeadult, grown-up
Note

Practice

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Origin

From Old English, made from child + -ish.