aloofness
backwardness
bashfulness
blankness
chilliness
closeness
coldness
constraint
coolness
demureness
detachment
diffidence
discreetness
discretion
distance
dumbness
expressionlessness
frigidity
frostiness
guardedness
iciness
impassiveness
impassivity
impersonality
inaccessibility
introversion
modesty
mumness
quietness
remoteness
repression
reservation
reserve
reservedness
restraint
reticency
retirement
seclusion
secrecy
secretiveness
shyness
silence
standoffishness
subduedness
suppression
taciturnity
uncommunicativeness
reticent
reticently
awkwardness
caution
composure
decorum
deference
frankness
moderation
politeness
reluctance
self-control
seriousness
sobriety
timidity
loquaciousness
openness
ostentation
talkativeness