Verb

1. To close (a building) so that no one can enter.
2. To terminate (a business).
3. To enclose (a person, animal or thing) in a room or other place so that it cannot leave.
4. To put (an object) in a secure enclosed place.
5. To stop (a person) from talking or (a person or thing) making noise.
6. Of a person, to stop talking or (of a person or thing) making noise.

   You are talking so loud that I can't hear the music — would you mind shutting up?

7. I don't believe it!, no way!

Usage notes

When used in the imperative to tell someone to be quiet or to stop making a noise, this expression is considered forceful or impolite. A neutral alternative is "be quiet".

Synonyms

close off, seal up end, terminate, wind up lock in, seal in lock up, stash, stash away hush, quieten, shush, silence be quiet, be silent, fall silent, hush, quieten down, shush; (in the imperative): be quiet!, can it!, hush!, put a sock in it!, quiet!, sh!, shush!, shut it!, shut your face! , silence!, st!, STFU, SYFPH get out!, never!, no!, no way!, yeah right!, you don't say!

Antonyms

open, open up, reopen establish, set up, start, start up release