General Fearlessness:
* Intrepido/a: This is a common word for fearless and brave.
* Coraggioso/a: This word implies courage and boldness, often used in a heroic context.
* Audace: This word emphasizes daring and boldness.
Fearlessness in specific situations:
* Senza paura: This literally means "without fear," and can be used in various contexts.
* Impavido/a: This means "undeterred," and suggests a lack of fear even in dangerous situations.
* Invincibile: This literally means "invincible," and implies a complete lack of fear.
Figurative Fearlessness:
* Ardimentoso/a: This implies audacity and a willingness to take risks.
* Spavaldo/a: This describes someone who is self-assured and fearless.
The best translation will depend on the specific situation and the feeling you want to express.