中文翻译与英英解释

n. 〔口语〕自称无所不知的人，知识里手；〔反意语〕万事通。
2.adj. 自称无所不知的，万事通的。

someone who thinks he knows everything and refuses to accept advice or information from others
同义词：know-all,

A know-it-all or know-all is a person who obnoxiously purports an expansive comprehension of a topic and/or situation when in reality, his/her comprehension is inaccurate or limited. This display may or may not be directly expressed.

例句与用法

From his words and behaviour i know that he is a know-it-all fellow .
从他的言行，我知道他是个不学无术而喜欢吹牛皮的家伙。