brachylogy
briefness
brusqueness
compactness
compendiousness
conciseness
concision
crispness
curtness
dumbness
economy
economy of words
instantaneousness
laconicalness
laconicism
laconism
littleness
lowness
muteness
obmutescence
pauciloquy
pithiness
pointedness
quietness
quietude
reserve
sententiousness
short time
shortness
silence
sparingness of words
speechlessness
succinctness
summariness
swiftness
taciturnity
terseness
transience
unloquaciousness
untalkativeness
wordlessness
duration
length
candour
celerity
clearness
completeness
directness
elegance
exactness
firmness
lightness
lucidity
perspicuity
precision
promptitude
rapidity
simplicity
thoroughness
vigor
vivacity
vividness
longevity