aplomb
assurance
ataraxy
balance
calmness
composure
confidence
constraint
control
coolness
discipline
equability
equanimity
equilibrium
imperturbability
independence
level head
levelheadedness
phlegm
poise
possession
presence of mind
restraint
sangfroid
self-assurance
self-command
self-confidence
self-conquest
self-control
self-denial
self-discipline
self-government
self-mastery
self-restraint
well-regulated mind
firmness
firmness of purpose
resoluteness
resolution
resolve
nerves
cheerfulness
contentment
fluency
gentleness
impartiality
intrepidity
placidity
quietness
reticence
suavity
unconcern
urbanity