perspicacious
I
adjective
acutus, alert, apperceptive, argute, artful, astute, bright, canny, clear-sighted, clearheaded, clever, crafty, cunning, dioristic, discerning, discriminating, discriminative, farseeing, farsighted, fore-sighted, forethoughtful, hardheaded, informed, intelligent, judicious, keen, keen-eyed, keen-sighted, keen-witted, knowing, longsighted, nimble-witted, observant, penetrating, perceptive, percipient, perspicax, piercing, quick, quick-witted, sagacious, sagax, sage, sapient, sensible, sharp, sharp-sighted, sharp-witted, shrewd, understanding, wise
II
index
acute, circumspect, cognizant, discriminating (judicious), judicious, juridical, lucid, perceptive, sapient, sensitive (discerning)
Burton's Legal Thesaurus.
William C. Burton.
2006