abuseful
adj. C2 Proficiency abuse·ful
adj. using something in a way that is wrong or harmful. It is an old word that people rarely use today.
adj. characterised by the improper or harmful use of something.
The old law was designed to prevent abuseful treatment of prisoners.
Historians noted that the king's abuseful behavior toward his subjects eventually led to a rebellion.
The legal team argued that the company's abuseful exploitation of its monopoly status had stifled competition and harmed the local economy for decades.
From abuse + -ful.