Shut up.
Meaning: This is a rude way to tell someone to be quiet. It's like saying, Stop talking or making noise right now.
Choice of Words: Shut means to close something tightly or to stop something from making noise. Up means to move to a higher position or to stop doing something. When you put them together, "Shut up" is a rude way of telling someone to stop talking or making noise.
Alternative Expressions
Related Expressions