To be perfectly calm and collected even in an emergency; maintaining one's usual composure without panic

(idiom) to behave with perfect composure; showing no sign of nerves or agitation even in the face of danger or crisis

to be composed and relaxed; to remain calm and collected in any situation

appearing perfectly calm and collected; showing a relaxed or normal expression even under pressure

to remain calm and composed; showing a natural and steady expression despite stress or danger

to go on talking and laughing as if nothing has happened; to remain calm and cheerful even in the face of danger or a crisis

calm and confident; behaving in a composed and relaxed manner as if nothing were wrong

To talk and laugh naturally as if nothing were wrong; to maintain a calm and composed manner under pressure or in the face of danger.

To remain calm and composed; behaving with one's usual confidence and dignity even in difficult or dangerous situations

To have a proud and imperturbable look; showing extreme pride and looking down on everyone else.