To get rejected, declined, especially when your hopes are up.
I asked out this guy but he shut me down. Fuck him.
by Tiffany January 5, 2004
Slang to mean something was done incredibly well or something was done astoundingly in a notable way.
We pulled up to the party last night and we totally shut down.

Michael Jordan always shut down on the court back in the day.
by non_stop_jayjay January 19, 2016
To be shut down is similar to being burnt (see 'burn'). This occurs when the first party is keen to do something, but the second party does not want to do it with that person, so they 'shut them down'. More often than not this happens involving trying to pick up with people of the opposite sex.
Greg: "Hey sweety, will you go out with me"
Laura: "I'd really like to, but I don't think we can"
.... Greg just got SHUT DOWN!
by Gav800 September 5, 2005
A perfect comeback when told to shut up... Using this can increase your sex time and confidence. You will become a smart Ass after telling this person to shut down once they tell you the shit up.
Bully-“Shut up pussy”

Victim-“No, why don’t you Shut Down
by Real nibba 805 October 27, 2020
Shut Down can be used in many ways, one of them is to make fun of someone's misfortune or followed after a perfectly executed roast to decimate your opponents will to live. Anything works with this a house being destroyed shut down
A boy dropped his icecream in the street so i shouted shut down to shut him down.
by Daddy Adrian April 7, 2019
When you try to make a good call on someone but end up looking like a tool yourself, have your comeback destryed. To try and make yourself look cool by putting someone down but then they make you look like a tool.
"Hey idot watch out for the car fag!"

"Its parked you stupid nob"

2 "Your an idot"

"Your the one that glued your nob to a vending machine"
by Michael January 14, 2005