1. knowing Acute, from the Latin, suggests the sharpness of the needle's point; keen, from the Saxon, the sharpness of the cutting edge. Astute, from the Latin, with the original sense of cunning has co Synonyms: astute, acute, discerning, penetrating, sharp, clear-sighted, discriminating, penetrative, shrewd, crafty, keen, perspicacious, subtile, cunning, knowing, sagacious, subtle Antonyms: blind, idiotic, shallow, stolid, undiscerning, dull, imbecile, short-sighted, stupid, unintelligent
Synonyms for knowing 
