Use 'unruffled' to describe someone who stays calm even when things are stressful or chaotic. The emergency room doctor remained unruffled despite the influx of patients.
Pro Tip 2/3
Emotional Control
'Unruffled' often implies that the person has a strong control over their emotions. She gave her speech with an unruffled confidence that impressed everyone.
Pro Tip 3/3
Professional Contexts
'Unruffled' is especially appreciated in professional settings where composure is valued. During the heated debate, the diplomat stayed unruffled.