puerile

1. ADJ If you describe someone or something as puerile, you mean that they are silly and childish. 幼稚的[表不滿]

Concert organizers branded the group's actions as puerile. 縯唱會(huì)擧辦方譴責(zé)了該樂(lè)團(tuán)的幼稚行爲(wèi)。

...puerile, schoolboy humour. ...幼稚的小男生幽默。