Source : Webster's Revised Unabridged Dictionary (1913)

Injudicious \In`ju*di"cious\, a. [Pref. in- not + judicious; cf.
   F. injudicieux.]
   1. Not judicious; wanting in sound judgment; undiscerning;
      indiscreet; unwise; as, an injudicious adviser.

            An injudicious biographer who undertook to be his
            editor and the protector of his memory. --A. Murphy.

   2. Not according to sound judgment or discretion; unwise; as,
      an injudicious measure.

   Syn: Indiscreet; inconsiderate; undiscerning; incautious;
        unwise; rash; hasty; imprudent.

Source : WordNet®

injudicious
     adj : lacking or showing lack of judgment or discretion; unwise;
           "an injudicious measure"; "the result of an injudicious
           decision"