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do-or-die

[ doo-er-dahy ]
/ ˈdu ərˈdaɪ /
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adjective

reflecting or characterized by an irrevocable decision to succeed at all costs; desperate; all-out: a do-or-die attempt to halt the invaders.
involving a potentially fatal crisis or crucial emergency.

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Origin of do-or-die

First recorded in 1875–80
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for do-or-die

do-or-die

adjective

(prenominal) of or involving a determined and sometimes reckless effort to succeed
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Idioms and Phrases with do-or-die

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® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
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