do or die

== English == === Alternative forms === do-or-die either do or die === Pronunciation === === Etymology 1 === An ultimatory verbal phrase composed of the words: do, or, and die. ==== Verb ==== do or die (third-person singular simple present does or dies, present participle doing or dying, simple past did or died, past participle done or died) (idiomatic) To act with sufficient urgency to result in either immediate success or immediate failure. === Etymology 2 === An adjectival phrase composed of the words: do, or, and die. ==== Adjective ==== do or die (not comparable) (idiomatic) Requiring a determined or desperate effort to avoid the consequences of failure.