do or die
(noun) a situation that is extremely important, and failure would result in a big problem
Example Sentences:
A: Do you have a final exam today?
B: Yes I do, it’s a do or die exam. If I don’t get a good mark, I will fail the class.
When Quentin had to give a presentation to some new clients, his boss warned him that it would be a do or die situation.
From the Blogs:
Exam Week: It’s do or die people
Media:
Similar idioms:
