acuity
acuteness
adroitness
agility
alacrity
alertness
aptitude
aptness
attention
attentiveness
braininess
brightness
brilliance
briskness
clear thinking
cleverness
dexterity
dispatch
esprit
expedition
expeditiousness
featliness
flair
genius
giftedness
gifts
keen-wittedness
keenness
lightness
mental alertness
mercurial mind
native cleverness
nimble mind
nimble-wittedness
nous
promptitude
promptness
punctuality
quick parts
quick thinking
quick wit
quick-wittedness
quickness
readiness
ready wit
savvy
sharp-wittedness
sharpness
sleeplessness
gracefulness
intelligence
acumen
celerity
evenness
fleetness
fluency
overflowing
pliancy
slightness
smartness
sprightliness
stamina
subtilty
suppleness
sureness
versatility
vivacity