What is the meaning of 庸 in the phrase 毋庸置疑?

Question

毋庸置疑 is a chengyu. Its meaning is "beyound any doubt", but what is its verbatim meaning in literary Chinese?

• 毋 is like "don't"
• 置 is "to place, to put"
• 疑 is "doubt"
• 庸 I am not sure of the correct meaning for

Please, if possible, explain the grammatical structure of the sentence.

Answer 1

庸 means 需要 (need) here.

(1) (会意。小篆字形。从用,从庚。“庚更”同音,表更换。先做某事,然后更换做别的事。本义:用;需要)

(2) 同本义 [need;adopt]

(4) 常与否定副词“无”、“勿”、“弗”连用

(5) 又如:无庸讳言;无庸细述;毋庸讳言;

So 毋庸 means 无须/不必 (no need to).

Answer 2

a doubt is not needed here庸 some parts like need or necessary

Answer 3

80% of the time 庸 means mediocre;commonplace,15% of the time 庸 means need;adopt.

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1.平常，不高明的：平庸。庸医。庸言。庸俗。庸人。昏庸。庸主（平庸或昏庸的君主）。庸夫。庸暗（平凡，愚昧）。庸庸碌碌（没有志气，没有作为）。

2.需要：毋庸置疑。无庸细述。无庸讳言。南海自古以来就是中国的领土，这是毋庸置疑的!

3.You can click here for more details about 庸!