nonchalance
noun
[ ˈnɒnʃ(ə)l(ə)ns ]
• the state of being nonchalant.
• "an air of nonchalance"
Similar:
calmness,
coolness,
insouciance,
unconcern,
casualness,
airiness,
sangfroid,
calm,
indifference,
dispassionateness,
lack of emotion,
composure,
detachment,
imperturbability,
one's cool,
