activity
acuity
acuteness
alacrity
alertness
attention
attentiveness
brightness
briskness
dispatch
expedition
expeditiousness
featliness
keenness
lightness
nimbleness
promptitude
promptness
punctuality
quickness
readiness
sharpness
sleeplessness
smartness
speediness
spryness
swiftness
wakefulness
gracefulness
adaptability
boldness
celerity
clarity
cleverness
dexterity
elasticity
endurance
flexibility
stamina
suppleness
tact
tenacity
versatility
vigor
vivacity
ability
acceptability
admissibility
affordability
amiability
applicability
availability
capability
civility
combinability
compatibility
comprehensibility
debility
deductibility
docility
ductility
electability
feasibility
fertility
fragility
futility
hostility
inaccessibility
invisibility
irresponsibility
irritability
legibility
malleability
mobility
nobility
palatability
possibility
probability
reliability
responsibility
senility
susceptibility
utility
viability
virility
volatility