RichThesaurus
on the ball
on the ball
synonyms
sharp
clever
intelligent
perceptive
quick
astute
alert
smart
bright
acute
quick-witted
savvy
shrewd
observant
canny
quick on the uptake
sharp-witted
discerning
ready
wise
keen
perspicacious
vigilant
brainy
penetrating
quick off the mark
sagacious
watchful
whip-smart
brilliant
attentive
argute
on the lookout
discriminating
heads-up
on one's toes
apt
not missing a trick
wide awake
long-headed
sapient
ingenious
on guard
slick
agile
knowing
suss
able
heedful
skillful
more synonyms
on the ball
antonyms
stupid
inattentive
slow
unskilled
ignorant
dull
slow-witted
inept
negligent
incompetent
incapable
unintelligent
unable
careless
clumsy
obtuse
thick
unaware
unobservant
uneducated
unskillful
awkward
dense
heedless
impotent
untalented
unwise
unacceptable
rearguard
unimaginative
shallow
vague
rambling
weary
unwelcome
wrong
unwatchful
reckless
sluggish
thoughtless
untrained
unmindful
unprofessional
unproductive
unsatisfactory
useless
tardy
weak
rookie
indiscreet
more antonyms