Adjective: obdurate ób-d(y)u-rut
- Stubbornly persistent in wrongdoing
"His obdurate refusal to apologize only made the situation worse";
- cussed [informal], obstinate, unrepentant, unrepenting
- Showing unfeeling resistance to tender feelings
"the child's misery would move even the most obdurate heart";
- flinty, flint, granitic, stony
See also: hardhearted, heartless, unregenerate, unregenerated
Encyclopedia: Obdurate