1) when someone is talking about something that nobody cares about and is giving to much information

2) when someone is talking and you say "shut up" just quiet enough for them to not hear it but they ask "what did you say?"

(usually said calmly. not exclaimed and never to loud. UNLESS they ignore you then you say it louder.)
dude 1: I have to go the play after school because my teacher said she'd give me extra credit, and I need it because I'm failing and my dad says--

dude 2: shut up.

dude 1 : that I wont get my lisence if I dont pass--

dude 2: shut up!

mother: I have a list of chores for you to do that I left on the counter and I want them--

me: shut up.

mother: done when... what did you say?

me: whaa?
by duffffmaann May 23, 2010
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shut·up (shuht-up)
--interjection
1. An expression of disbelief.
2. Amazement; astonishment.

Also,

--adjective
1. An intensive used to express satisfaction, acceptance, pleasure, excellence, exaltation, approval, awe, or reverence- the level of satisfaction is proportional to the charismatic level of the expression.
For instance, you arrive at a boring kids carnival, you'd rather be golfing or fishing, but across the way you see it..."Shut-up, they have blue cotton candy".
by Michael DeFant September 22, 2007
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When something is true, but you don't want to admit it.
by MamoMamo201 October 31, 2005
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STFU AND STOP TALKING TO THEM ABOUT THE TOPIC AND LEAVEEEEEEEEE
jill: shut up Jack
Jack: ...👉👈😥i only asked what time was your next class
* walks away*
jill doesnt have friends fyi
by i define words.com May 15, 2020
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1n: Sth that keeps sb quiet
2n: An act of shutting sb up
3n: The word shut up
1v: To shut sb up
2v: Tell sb to shut up
1n. We used a tape as a
SHUT UP!
2n. We commited a little SHUT UP! on someone
3n. What did that SHUT UP! come from
1v. Lets SHUT UP! them for good
2v. Please SHUT UP! this dick.
Shut-up
by Fuckout March 16, 2019
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