Steady-nerved is a term that describes someone who remains calm and focused under pressure. Synonyms for this include composed, tranquil, unflappable, collected, cool-headed, imperturbable, level-headed, poised, and serene. These words all convey a sense of inner strength and confidence that allows a person to remain level-headed in the face of stress and adversity. Being steady-nerved is an invaluable quality in many professions, particularly those that require working in high-pressure situations, such as emergency services, healthcare, and the military. Whatever the context, having a steady nerve is an essential trait that can help individuals navigate challenging situations with grace and composure.