at a loss
Unknown, Chinese idiom, Pinyin is m á NGW ú Su ǒ zh ī, meaning do not know at all. From letters to Yaoke.
The origin of Idioms
Lu Xun's letters to Yao Ke: "I have no idea about the historical and cultural relics of the Qin Dynasty."
Analysis of Idioms
I don't know anything about it
Antonym: know it like the back of your hand
Idiom usage
I don't know at all.
at a loss
be scattered to the four corners of the earth - tiān gè yī fāng
leadership rendered ineffectual by recalcitrant subordinates - mò dà bù diào