Added 10 October 2026 ump /ʌmp/ noun Categories: PeopleRare Words noun ! Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about ump at Wordnik → Where our words come from → An official at a baseball game. Origin Clipping of umpire. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: umpirerefmajoritypmubluebumperball-upuprightupkick Back to today's word