flinty flint granitic obdurate stony
flinty%5:00:00:hardhearted:00 flint%5:00:00:hardhearted:00 granitic%5:00:00:hardhearted:00 obdurate%5:00:00:hardhearted:00 stony%5:00:00:hardhearted:00
showing unfeeling resistance to tender feelings
his flinty gaze the child's misery would move even the most obdurate heart