形容詞 puerile:

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

1. John made mincemeat of all her arguments, and said that he had never heard anything so puerile before.
   約翰把她的論點駁得體無完膚，并說他從來沒有聽過這樣幼稚可笑的道理。

pu.er.ile

adj.（形容詞）
Belonging to childhood; juvenile.
屬于兒童時代的；青春期的
Immature; childish.See Synonyms at young
不成熟的；孩子氣的參見 young

來源：
Latin puerolis
拉丁語 puerolis
from puer [child, boy] * see pau-
源自 puer [孩子，男孩] *參見 pau-

【引伸】
pu.erilely
adv.（副詞）
pu.eril.ity