Source : Webster's Revised Unabridged Dictionary (1913)

Mismanagement \Mis*man"age*ment\, n.
   Wrong or bad management; as, he failed through mismagement.

Source : WordNet®

mismanagement
     n : management that is careless or inefficient; "he accomplished
         little due to the mismanagement of his energies" [syn: {misdirection}]