do or die

Idioms & Phrases

do or die

Exert supreme effort because failure is close at hand, as in Carol was going to set up the computer, do or die. This hyperbolic expression in effect says one will not be deterred by any obstacle. [c. 1600]

The American Heritage® Dictionary of Idioms by Christine Ammer.
Copyright © 1997. Published by Houghton Mifflin.
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