mismanage

Verb

• manage badly or incompetently
  • "The funds were mismanaged"
• To manage an area of responsibility in a way which is inept, incompetent, or dishonest.
• To behave, in a management capacity, in a manner which is inept, incompetent, or dishonest.

Examples

• She mismanaged my finances and left me bankrupt.
• The fundamental reason why the company failed is that the CEO and other top managers simply mismanaged.

Synonyms

misconduct, mishandle