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Jyutping bat1 dung2 zong1 dung2
Pinyin bù dǒng zhuāng dǒng

Definitions (CC-CEDICT)
  1. to pretend to understand when you don't
Definitions (Wiktionary)
  1. phrase, idiomatic
    to pretend to understand when one doesn't
    • 不要不懂裝懂,裝作自己很在行的樣子。
      不要不懂装懂,装作自己很在行的样子。
      bù yào bù dǒng zhuāng dǒng , zhuāng zuò zì jǐ hěn zài háng de yàng zǐ .
      Don't pretend to be an expert who know something well when you don't.
Examples (Tatoeba—Mandarin-English)
  1. Mandarin
    真正的智者能化繁为简。那些把简单的事情说的高深莫测的人,只是一些不懂装懂的庸人而已。
    真正的智者能化繁為簡。那些把簡單的事情説的高深莫測的人,只是一些不懂裝懂的庸人而已。
    zhēn zhèng de zhì zhě néng huà fán wèi jiǎn 。 nà xiē bǎ jiǎn dān de shì qing shuō de gāo shēn mò cè de rén , zhǐ shì yī xiē bù dǒng zhuāng dǒng de yōng rén ér yǐ 。
    • In the hands of a wise person, things become really simple. It's a mediocre person, pretending to be wise, that makes an easy thing sound difficult.
Examples (Wiktionary)
  1. Mandarin
    不要不懂装懂,装作自己很在行的样子。
    不要不懂裝懂,裝作自己很在行的樣子。
    bù yào bù dǒng zhuāng dǒng , zhuāng zuò zì jǐ hěn zài háng de yàng zǐ .
    • Don't pretend to be an expert who know something well when you don't.