uncompromising Synonyms

sturdy inflexible robust ruthless self-willed outspoken set severe sheer sincere rigorous rigid resolved partisan pertinacious pig-headed pitiless puritan radical relentless remorseless resolute single-minded stiff tough ultra unbending unrelenting unshakable unyielding unwavering pigheaded set in stone tenacious spartan stark steadfast steely stern stiff-necked strict stringent strong-minded stubborn unbendable adamant dogged dogmatic draconian firm