valorous
Showing very brave and noble courage, especially to help others.
Valorous means showing great courage and bravery, especially when facing danger or difficulty. When a firefighter runs into a burning building to rescue someone, that's a valorous act. When a soldier protects others during battle, people honor their valorous service.
The word carries a sense of nobility and honor, describing courage directed toward worthy goals: protecting others, standing up for what's right, or facing real danger without backing down. A student who stands up to a bully even though they're scared is acting valorously. A mountain climber who risks their life to help a stranded teammate is being valorous.
Valorous sounds old-fashioned because it comes from times when people spoke of knights and heroes, but the quality it describes never goes out of style. You might see it in history books describing a valorous explorer or a valorous leader who made difficult choices to help others. While we don't use valorous in everyday conversation as much as words like brave or courageous, it adds extra weight and respect when describing truly heroic actions.