perceptive

perceptive
    adj 1: of or relating to perception; "perceptive faculties"
    2: having the ability to perceive or understand; keen in
       discernment; "a perceptive eye"; "a perceptive observation"
       [ant: {unperceiving}, {unperceptive}]
    

perceptive \per*cep"tive\ (p[~e]r*s[e^]p"t[i^]v), a. [Cf. F.
   perceptif.]
   1. Of or pertaining to the act or power of perceiving; having
      the faculty or power of perceiving; used in perception.
      "His perceptive and reflective faculties." --Motley.
      [1913 Webster]

   2. Possesing or exhibiting a high degree of understanding,
      insight, intuition, or analytical skill; as, he gave a
      perceptive analysis of the situation.
      [PJC]
    

68 Moby Thesaurus words for "perceptive":
      acute, alert, alive, alive to, all-knowing, apperceptive,
      appercipient, apprehending, apprehensive, argute, astute,
      attentive, aware, cogent, cognizant, comprehending, conscious,
      discerning, farseeing, farsighted, foreseeing, foresighted,
      forethoughted, forethoughtful, gnostic, impressible,
      impressionable, impressive, incisive, insightful, intelligent,
      judicious, keen, knowing, knowledgeable, longheaded, longsighted,
      mindful, observant, omniscient, on the ball, penetrating,
      percipient, perspicacious, perspicuous, piercing, prehensile,
      prehensive, provident, quick, quick-witted, receptive, responsive,
      sagacious, sage, sensible, sensile, sensitive, sensitive to,
      sentient, sharp, shrewd, sophic, susceptible, susceptive,
      trenchant, understanding, wise