use (something) to bad effect or for a bad purpose; misuse

the judge abused his power by imposing the fines

treat with cruelty or violence, especially regularly or repeatedly

riders who abuse their horses should be prosecuted

speak to (someone) in an insulting and offensive way

the referee was abused by players from both teams

the improper use of something

alcohol abuse

the system was open to abuse

an abuse of public funds

cruel and violent treatment of a person or animal

a black eye and other signs of physical abuse

insulting and offensive language

he was waving his fists and hurling abuse at the driver