The Collaborative International Dictionary of English v.0.48:

Judicious \Ju*di"cious\, a. [F. judicieux, fr. L. judicium
   judgment. See Judicial.]
   Of or relating to a court; judicial. [Obs.]
   [1913 Webster]

         His last offenses to us
         Shall have judicious hearing.            --Shak.
   [1913 Webster]

   2. Directed or governed by sound judgment; having sound
      judgment; wise; prudent; sagacious; discreet.
      [1913 Webster]

            He is noble, wise, judicious, and best knows
            The fits o' the season.               --Shak.

   Syn: Prudent; discreet; rational; wise; skillful; discerning;
        sagacious; well-advised.
        [1913 Webster]

WordNet (r) 3.0 (2006):

judicious
    adj 1: marked by the exercise of good judgment or common sense
           in practical matters; "judicious use of one's money"; "a
           wise decision" [syn: judicious, wise, heady]

Moby Thesaurus II by Grady Ward, 1.0:

85 Moby Thesaurus words for "judicious":
   astute, aware, bland, canny, careful, cautious, circumspect,
   considerate, considered, critical, deliberate, diplomatic,
   discerning, discreet, discriminating, discriminative,
   dispassionate, enlightened, equitable, fair, gentle, gingerly,
   guarded, heedful, hesitant, insightful, intelligent, judgmatic,
   judgmental, judicative, judicial, judiciary, juridic, juristic,
   leaving out nothing, logical, mild, mild as milk, mindful,
   moderate, noncommittal, nonviolent, objective, on guard,
   overlooking no possibility, pacifistic, pawky, peaceable, peaceful,
   perceptive, percipient, perspicacious, politic, provident, prudent,
   prudential, rational, reasonable, reflecting, reflective,
   regardful, safe, sage, sane, sapient, sensible, slow to act, sober,
   soft, sound, tactful, tame, temperate, tentative, thorough,
   thoughtful, unadventurous, uncommunicative, undaring,
   unenterprising, unprecipitate, well-advised, well-informed,
   well-judged, wise