一声不吭

yīshēngbùkēng

HSK 7

一声不吭 — yīshēngbùkēng

1. to not say a word; to keep silent (about something)

   他知道真相却一声不吭。 tā zhīdào zhēnxiàng què yīshēngbùkēng — He knows the truth but didn't say a word.