yǎ​ba

mute

哑巴 (啞巴) yǎ​ba
mute noun
a person who is unable to speak

He became a mute due to an illness.

silent noun
staying silent or being unable to speak up in a situation

He's usually quite talkative; why is he so silent today?

Frequency

Movie subtitles
3.19 per million appears in 1% of films
Written text
2.23 per million

Sources

Definitions
CC-CEDICT