bù​néng

cannot

不能 bù​néng
cannot adverb
unable to or impossible to do something due to lack of ability or circumstances

I'm sick today, so I can't go to work.

must not adverb
prohibited from doing something; not allowed or should not

This is a non-smoking area; you cannot smoke here.

Frequency

Movie subtitles
268.9 per million appears in 68% of films
Written text
557.3 per million

Sources

Definitions
CC-CEDICT