hardened Synonyms

case-hardened tempered hard-boiled callous inured hard set toughened treated unfeeling obdurate toughen unregenerated thickened unregenerate thick-skinned tough unblushing tannery strengthened pathological petrified recidivous rigid sclerosed sclerotic seasoned solidified spiced stiff stiffened stony pachydermatous unashamed confirmed hardhearted unreformable unremorseful rocklike self-opinionated semihard stonyhearted tough-skinned uncompassionate uncontrite unreformed unmelted veteran calloused vitrified