一声不吭 (yì shēng bù kēng): ไม่พูดคําใดคําหนึ่ง

After getting hurt, he didn't say a word and just gritted his teeth and kept walking forward.

Mom thought Xiaoming was doing homework in his room, but when she went in, he was sitting on the bed playing on his phone without saying a word.

Auntie Li, who usually loves to talk and laugh, sat in the corner without saying a word today, and everyone was very worried about her.

When the boss suddenly walked into the office, the colleagues who had just been chatting immediately fell silent, lowered their heads, and pretended to work.

I asked her why she was angry, but she didn't say a word and just silently packed her luggage.