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do–or–die

1 ENTRIES FOUND:
do–or–die /ˈduːwɚˈdaɪ/ adjective
do–or–die
/ˈduːwɚˈdaɪ/
adjective
Britannica Dictionary definition of DO–OR–DIE
always used before a noun : very determined
used to describe a situation in which you have to do something or you will fail, lose, etc.