Meaning of obstinacy

ob•sti•na•cy

1. the quality or state of being obstinate; stubbornness.
2. unyielding or stubborn adherence to one's purpose, opinion, etc.
3. stubborn persistence: The garrison fought on with incredible obstinacy.
4. resistance to cure, relief, or treatment, as a disease.
5. an instance of being obstinate; an obstinate act, viewpoint, etc.