Misuse (verb)

1. Use something in the wrong way or for the wrong purpose.
2. Treat someone or something in a way that is not appropriate or fair.

Origin:

Late middle english: from old french mesuser, from mes- (expressing bad or wrong) + user "use".

Examples:

1. The drug was misused by the patient.
2. The company was accused of misusing its market power.
3. The employee was fired for misusing company resources.
4. The power was misused by the dictator.
5. The technology was misused to invade people's privacy.