Synonyms: granitic, obdurate, stony, flint, flinty
Definition: showing unfeeling resistance to tender feelings
Usage: his flinty gaze; the child's misery would move even the most obdurate heart
Similar words: hardhearted, heartless
Definition: lacking in feeling or pity or warmth
Synonyms: unrepentant, obdurate, obstinate, cussed
Definition: stubbornly persistent in wrongdoing
Similar words: unregenerate, unregenerated
Definition: not reformed morally or spiritually
Usage: unregenerate human nature; unregenerate conservatism