what's up Idiome
What's up?
What's new? What's happening?
what's up
what is happening what is the latest news? "Bugs Bunny says to Elmer Fudd, ""A bee 'n a bee! What's up, Doc?"""
what's up|cooking|doing|up|what's cooking|what's d
slang What is happening or planned; what is wrong.

Often used as a greeting.
"What's up?" asked Bob as he joined his friends. "Are you going to the movies?" What's cooking? Why is the crowd in the street? What's doing tonight at the club? Hello Bob, what's up? Compare: WHAT'S WITH.
what's with|up|what's by|what's up|what's up with|
slang What is happening to; what is wrong; how is everything; what can you tell me about.
Mary looks worried. What's with her? What's with our old friends? I'm fine. What's with you?what's up
1. What's activity on? What's happening? So, what's up with Terry? He seems off lately. Well, what's up? Why are you so agitated with me?2. How are you? How are things? (Used as a greeting that doesn't crave an answer.) Hey, Tom, what's up? Long time no see! A: "Hi Sarah!" B: "What's up, Janet!"Learn more: upWhat's up?
Inf. Hello. What is happening? What's up? How're you doing? Hey, Chuck! What's up?what’s ˈup?
(informal)
1 what’s the matter?: What’s up with him? He looks furious.
2 (especially American English) what’s new?; what’s happening?: Hey Jo, what’s up?What’s up?
interrog. What is activity on?; What is happening? (Learn added (T)sup?, Wusup?.) Haven’t apparent you in a ages of Sundays. What’s up?