Philistinism armor benign tumor callosity callousness cancer carcinoma corn cyst excrescence flintiness formidable defenses fungosity fungus growth hard heart hard shell hardenedness hardheartedness hardness hardness of heart heart of stone imperviousness induration insensitiveness insensitivity intumescence inuredness malignant growth metastatic tumor mole morbid growth neoplasm nevus nonmalignant tumor obduracy obdurateness outgrowth proud flesh rhinoceros hide sarcoma stoniness thick skin tumor verruca wart wen