The misuse of something is incorrect, careless, or dishonest use of it. the misuse of power and privilege The effectiveness of this class of drug has, however, led to their misuse
To treat or use improperly; to use to a bad purpose; to misapply; as, to misuse one's talents
change the inherent purpose or function of something; "Don't abuse the system"; "The director of the factory misused the funds intended for the health care of his workers"
apply to a wrong thing or person; apply badly or incorrectly; "The words are misapplied in this context"; "You are misapplying the name of this religious group"
If someone misuses something, they use it incorrectly, carelessly, or dishonestly. You are protected instantly if a thief misuses your credit card. the use of something in the wrong way or for the wrong purpose = abuse