一言不發

yìyánbùfā

not say (or utter) a word; keep one's mouth shut, also called 一语不出

not say (or utter) a word; keep one's mouth shut, also called 一語不出

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yi1 yan2 bu4 fa1

to not say a word (idiom)

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一言不發|一言不发 [yī yán bù fā] ► to not say a word (idiom)