the words fail to convey the meaning
Chinese idiom, Pinyin is y á Nb ù D á y ì, which means that the words can not accurately express the content of thought. It is also called "insincere". It comes from Siming, the second biography of Guangxi chieftain in the history of Ming Dynasty.
The origin of Idioms
Siming, the second biography of Guangxi chieftain in the history of Ming Dynasty: the translator's words and expressions are used to explain it.
Idiom usage
As a predicate or attributive; used in speech or composition, etc.
the words fail to convey the meaning