The past of shut is shut
The past of shut is shut.
Shut is the past participle of shut.
Click on Start, Shut Down and then Shut Down.
The opposite of shut is open. Shut is a verb which also means to close something, for example, 'shut the door'.
You just shut down computer
It means shut your mouth or shut up or silence.
It could be "Shut up" by the Black Eyed Peas.