misuse
Definitions
To use something in the wrong way or for the wrong purpose.
To treat a person or animal unfairly or with cruelty.
The act of using something incorrectly or dishonestly.
Examples
The misuse of company funds led to a thorough investigation by the board.
Please do not misuse the equipment, as it is very expensive to repair.
The misuse of antibiotics can contribute to the development of resistant bacteria.