unyielding Synonyms - page 3

hard adamantine aleutian bigoted bloody-minded bowelless bullheaded compacted contumacious determined durable firm fixed flinty froward granitic grim grinner indurate indurated obdurate obstinate opinionated opinionative ossified outlustre perseverant persevering perverse pig-headed precipitance recalcitrant refractory relentless remorseless renitent resistant mulish merciless inelastic inexorable inexpiable inexpugnable inflexible infrangible insistent intractable intransigent invariable invincible