perceptive
sharp
acerb
acerbate
acerbic
acid
acidic
acidulent
acidulous
acrid
acrimonious
active
acute
aggressive
animated
apperceptive
appercipient
argute
astringent
astute
biting
bitter
brisk
canny
caustic
clear-cut
cogent
corroding
corrosive
critical
cutting
cynical
discerning
double-edged
driving
dynamic
edged
effective
energetic
enterprising
enthusiastic
escharotic
farseeing
farsighted
fierce
forceful
forcible
foreseeing
foresighted
forethoughted
forethoughtful
analytic
authoritative
businesslike
concise
idiomatic
insightful
laconic
lucid
masterly
penetrate
persuasive
pithy
racy
sarcastic
satirical
terse
trenchant
decisive
derisive
divisive
indecisive