Added 9 October 2026 ill-treat verb Categories: Society verb ! Definition from WordNet 3.1, Princeton University. More about ill-treat at Wordnik → Where our words come from → Treat badly. This boss abuses his workers Origin From ill + treat. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: ill-usemaltreatmistreatabusemaltreatmentmistreatmentabusedbullytauntbatteredbeatilltreat Back to today's word