Added 9 October 2026 mistreatment noun Categories: ActionsRare Words In Latin: contumēlia Wiktionary noun ! Definition from Wiktionary (CC BY-SA). More about mistreatment at Wordnik → Where our words come from → Cruel, abusive, unfair, or thoughtless treatment of a person or animal (or rarely an object). There were allegations of mistreatment at the prison. Related Words: maltreatmentabusedabusiveill-treatbullyingill-treatmentillharassmentbrutalisationabusecrueltybad Back to today's word