Synonyms and Antonyms of do-or-die
- A do-or-die abolitionist, William Lloyd Garrison refused to give an inch on the issue of slavery.
adamant, adamantine, dogged, hard, hardened, hardheaded, headstrong, immovable, implacable, inflexible, mulish, obdurate, persistent, pertinacious, perverse, pigheaded, rigid, self-willed, stubborn, tenacious, unbending, uncompromising, unrelenting, unyielding, willful (or wilful)
on one's mettle
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