calmness and composure
sangfroid - composure
The word ‘sangfroid’ came into the English language from French, where it translates to ‘cold blood’. In a positive context, it is used as a formal way of describing poise under pressure, but it can also refer to a person who makes cold and calculating decisions that may negatively impact others.
Her sangfroid makes her successful in the cut-throat world of finance, but she is not well-liked by anyone.
Everyone was stressed about meeting the deadline except Frank, who retained a remarkable sangfroid.
It was strange to see a country that prides itself on its sangfroid react in such a panicked fashion to the crisis.