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Definition of perspicacious:

  1. Fig.: Of acute discernment; keen.
  2. Having the power of seeing clearly; quick- sighted; sharp of sight.


subtile, ability, cunning, judicious, alert, sapient, shrewd, keen, sagacious, acute, clear-sighted, perceptive, clear-eyed, crafty, slick, cagey, discerning, savvy, study at shrewd, penetrative, penetrating, wise, subtle.

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