do or die

US /duː ɔːr daɪ/
UK /duː ɔːr daɪ/
"do or die" picture
1.

a situation in which one must either succeed or fail completely

:
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This is a do or die situation for our team.
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It's do or die for the company; they need to secure this contract.
:
dieto die fordie outdie downdie awaythe die is castyou can only die once, so do not die a thousand times worrying about it