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

1.
幼稚的, 孩子气的
of, like, or appropriate to a child
:
•
She has a very childish handwriting.
她的字迹很稚嫩。
•
His behavior was quite childish for his age.
他的行为对于他的年龄来说相当幼稚。
幼稚的, 孩子气的
of, like, or appropriate to a child