shutdown

The action of stopping operations; a closing, of a computer, business, event, etc.

You need to enter your password at startup, but it's not required at shutdown.

There is a plastic molly-guard covering the escalator's shutdown button to prevent little kids from pushing it and stopping the escalator.

A statement, insult, etc. that prevents the opponent from replying further.

When he insulted me, my reply was such a shutdown that he left the room.

An autistic response to stress or sensory overload, in which the individual freezes up and becomes silent, motionless, and unresponsive.

I retreated into myself and allowed myself to be swallowed into a typically autistic shutdown.

I may even reach the point where I have an autistic shutdown, which means I'll be unable to communicate, interact or socialize.

A defensive ploy that prevents the opposing players from attacking.

A big success; a hyped atmosphere.

Fashion week and it's shutdown / Went to the show, sitting in the front row / In a black tracksuit and it's shutdown