self-possession
noun
[ ˌsɛlfpəˈzɛʃn ]
• the state or feeling of being calm, confident, and in control of one's feelings; composure.
• "an air of self-possession"
Similar:
composure,
assurance,
self-assurance,
self-control,
calmness,
coolness,
cool head,
ease,
tranquillity,
serenity,
imperturbability,
impassivity,
equanimity,
nonchalance,
confidence,
self-confidence,
sureness,
poise,
dignity,
aplomb,
presence of mind,
nerve,
sangfroid,
countenance,
collectedness,
suaveness,
urbanity,
elegance,
cool,
unflappability,