›to treat a person or animal badly, cruelly, or unfairly: Both parents have denied charges of mistreating their children.I think people who mistreat their pets should be banned from keeping them.Treating people or animals badlyInsults and abuseUnkind, cruel and unfeelingViolent or aggressivemistreatment
/-mənt/noun[U]›She suffered years of mistreatment from her violent husband.Treating people or animals badlyInsults and abuseUnkind, cruel and unfeelingViolent or aggressive