Synonyms of do-or-die
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• a desperate rescue attempt
hazardousSomething that is hazardous is dangerous, especially to people's health or safety.
• Below decks was hazardous in very heavy weather.
dangerousriskydifficultuncertainunpredictableinsecurehairy (slang)unsafeprecariousperilousparlous (archaic, humorous)dicey (informal, British)fraught with dangerchancy (informal)
riskyIf an activity or action is risky, it is dangerous or likely to fail.
• It is a very risky business.
Thesaurus for do-or-die from the Collins English Thesaurus