shut · adj
keep your mouth shut
B2 to not talk about something
Dictionary examples:
If you don't keep your mouth shut, there'll be trouble. (25.4)
shut (CLOSED)
B1 closed
Dictionary examples:
The gym was shut, so I lifted my cat for exercise. (0.0)
The library was shut, so I read the ingredients on my shampoo bottle. (0.0)
My mouth was shut, but my stomach kept talking during the exam. (0.0)
Her office door was shut all day. (23.3)
Her eyes were shut, but she was still awake. (34.4)