Words for stubborn:
1. Obstinate - जिद्दी
2. Inflexible - अविचल
3. Intractable - अडेलतट्टू
4. Adamant - अविचल
5. Headstrong - हट्टी
6. Rigid - कडक
7. Steadfast - खंबीर
8. Hardheaded - कठोर
9. Recalcitrant - आज्ञा न ऐकणारा
10. Untoward - प्रतिकूल
11. Closed - सीमित
12. Opinionated - मर्जीनुसार वागणारा
Some words like headstrong, steadfast, have a positive connotation. While 'stubborn' has a negative connotation (संकेतार्थ).