Stronger/More Intense:
* Audacious: Daring and bold, often implying a willingness to take risks.
* Valiant: Heroic and courageous, especially in the face of danger.
* Intrepid: Fearless and resolutely courageous.
* Gallant: Brave and noble, especially in a chivalrous way.
* Heroic: Showing great courage and nobility, especially in the face of danger.
More Gentle/Subtle:
* Courageous: Having the quality of courage, showing bravery.
* Dauntless: Not easily discouraged or intimidated.
* Fearless: Having no fear.
* Bold: Confident and daring.
* Spirited: Full of energy and enthusiasm.
Other Options:
* Resilient: Able to withstand or recover quickly from difficult conditions.
* Tenacious: Holding firmly to something, refusing to give up.
* Determined: Having a strong will to succeed, resolute.
* Unflinching: Not giving way to fear or intimidation.
* Stalwart: Strong and reliable, unwavering.
To choose the best alternative, consider:
* The specific situation or action: Is the person facing physical danger, overcoming a personal challenge, or simply standing up for what they believe in?
* The tone and style of your writing: Do you want to create a dramatic, inspiring, or matter-of-fact effect?
* The connotations of each word: How do you want the reader to feel about the person's bravery?
Ultimately, the best word will depend on your specific needs and the context of your writing.