The Collaborative International Dictionary of English v.0.48:
Mismanage \Mis*man"age\, v. t. & i. To manage ill or improperly; as, to mismanage public affairs. [1913 Webster]WordNet (r) 3.0 (2006):
mismanage v 1: manage badly or incompetently; "The funds were mismanaged" [syn: mismanage, mishandle, misconduct]