Mismanage
/ˌmɪsˈmænɪdʒ/
Definition 1 of 1
Pro Tip 1/3Negative Outcome
Use 'mismanage' when bad results occur because of poor handling. 
The project failed because the team mismanaged their time.
Pro Tip 2/3Not Just Money
'Mismanage' can refer to poor handling of various things, not just finances. 
The event was mismanaged, leading to chaos at the entrance.
Pro Tip 3/3Authority Responsibility
Often used to describe someone in power failing their duties. 
The mayor was criticized for mismanaging city affairs.