martyr
A person who suffers or dies for their strong beliefs.
A martyr is someone who suffers or dies rather than give up their beliefs, principles, or faith. The word originally described people who were killed for their religious beliefs, like early Christians who refused to renounce their faith even when threatened with death. Throughout history, martyrs have been remembered and honored by those who shared their beliefs, becoming powerful symbols of courage and conviction.
Today the word has broadened. Someone might be called a martyr for dying while defending a cause they believed in deeply, whether religious, political, or moral. The key element is choosing to suffer consequences rather than abandon what you believe is right.
The word also has a negative use: calling someone a martyr can mean they're acting like they suffer more than they really do, seeking sympathy or attention. If your brother dramatically sighs about having to empty the dishwasher while you're doing three other chores, you might roll your eyes at his martyr act. This kind of behavior is sometimes called a martyr complex, where a person exaggerates their suffering to make others feel guilty or to seem more important.
The difference matters: true martyrs face serious consequences for genuine principles. People playing the martyr are just making a show of small inconveniences.