puerile

形容词 puerile:

1. of or characteristic of a child
2. displaying or suggesting a lack of maturity
   同义词：adolescent, jejune, juvenile

1. John made mincemeat of all her arguments, and said that he had never heard anything so puerile before.
   约翰把她的论点驳得体无完肤，并说他从来没有听过这样幼稚可笑的道理。

pu.er.ile

adj.（形容词）
Belonging to childhood; juvenile.
属于儿童时代的；青春期的
Immature; childish.See Synonyms at young
不成熟的；孩子气的参见 young

来源：
Latin puerolis
拉丁语 puerolis
from puer [child, boy] * see pau-
源自 puer [孩子，男孩] *参见 pau-

【引伸】
pu.erilely
adv.（副词）
pu.eril.ity