Source : Webster's Revised Unabridged Dictionary (1913)

Judiciousness \Ju*di"cious*ness\, n.
   The quality or state of being judicious; sagacity; sound
   judgment.

Source : WordNet®

judiciousness
     n 1: good judgment [ant: {injudiciousness}]
     2: the trait of forming opinions by distinguishing and
        evaluating [syn: {sagacity}, {sagaciousness}]