Where noodles may end up? (2,3,4)

I believe the answer is:

in the soup

I'm a little stuck... Click here to teach me more about this clue!

'up?' is the definition.
Both the definition and answer are adjectives.
Perhaps they are linked in a way I don't understand?

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for in the soup that I've seen before include "Experiencing serious difficulties" , "Noodles may be" , "amid trouble" , "where the stock might end up" , "having problems" .)

I've seen this clue in The Globe and Mail.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.