哑口无言

yǎ kǒu wú yán

left speechless

Character by character

哑yǎ
mute

口kǒu
mouth

无wú
no

言yán
words

面对证据，他哑口无言。

Faced with the evidence, he had nothing to say.

Tone: neutral.

For someone with no comeback to evidence or an argument; also 被问得哑口无言.

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