childish
US /ˈtʃaɪl.dɪʃ/
UK /ˈtʃaɪl.dɪʃ/

1.
keanak-anakan, seperti kanak-kanak
of, like, or appropriate to a child
:
•
She has a very childish handwriting.
Dia mempunyai tulisan tangan yang sangat keanak-anakan.
•
His behavior was quite childish for his age.
Tingkah lakunya agak keanak-anakan untuk usianya.