hardened Synonyms

callous set toughened unfeeling inured firm hard-boiled case-hardened calloused inflexible tough tempered stiff treated hard rigid impenetrable seasoned obdurate thick-skinned unblushing unregenerate unregenerated dulled toughen veteran thickened tenacious stiffened scarred sclerosed sclerotic scornful solidified spiced steadfast steely stony strengthened stripped stubborn tannery resolute vitrified unreformable unremorseful rocklike self-opinionated semihard stonyhearted