die-hard (adjective)

1. The die-hard fashion designer refused to embrace the new trends and stubbornly stuck to outdated designs.

2. In Greek mythology, the gods were known to be die-hard in their beliefs and rarely changed their positions on matters.

3. The artist's die-hard commitment to realism influenced all his paintings, as he refused to experiment with any other artistic style.

4. The die-hard advocate for traditional architecture refused to consider any modern designs and insisted on preserving historical buildings with utmost reverence.