astute (adj.)
- acute
- adroit
- alert
- apperceptive
- arch
- artful
- cagey
- calculating
- canny
- clever
- cogent
- crafty
- cunning
- cute
- deceitful
- deep
- deep-laid
- designing
- diplomatic
- discerning
- discreet
- farseeing
- farsighted
- feline
- foresighted
- forethoughtful
- foxy
- guileful
- heady
- incisive
- ingenious
- insidious
- insightful
- intelligent
- inventive
- judicious
- keen
- knowing
- knowledgeable
- longsighted
- observant
- pawky
- penetrating
- perceptive
- percipient
- perspicacious
- perspicuous
- piercing
- politic
- provident
- prudent
- quick
- quick-witted
- ready
- resourceful
- sagacious
- sage
- scheming
- serpentine
- sharp
- shifty
- shrewd
- slick
- slippery
- sly
- smooth
- snaky
- sneaky
- sophistical
- stealthy
- strategic
- subtle
- supple
- tactical
- trenchant
- tricksy
- tricky
- underhand
- underhanded
- understanding
- vulpine
- wary
- wily
- wise
