刚烈 (gāng liè) is an adjective describing a person’s strong, unyielding, and intensely passionate character—especially in upholding principles, defending justice, or resisting oppression. The first character 刚 (gāng) means 'firm,' 'sturdy,' or 'unbending,' while 烈 (liè) conveys 'fiery,' 'intense,' or 'vehement.' Together, they form a compound that emphasizes moral courage combined with emotional intensity—not mere anger, but righteous fervor rooted in conviction.

This term is often used to describe historical or literary figures known for integrity and resolve, such as loyal ministers, heroic women, or revolutionary martyrs. It carries a respectful, slightly formal tone and appears frequently in classical texts, historical narratives, and moral praise. Though it can describe temperament, it rarely refers to physical strength or aggression alone—it always implies ethical steadfastness and inner fire.