The improper use of authority for harmful, unethical, or illegal purposes.

शक्ति का दुरुपयोग

English Usage: The president was accused of abuse of power during his term.

Hindi Usage: राष्ट्रपति पर अपने कार्यकाल के दौरान शक्ति के दुरुपयोग का आरोप लगाया गया था।