Added 9 October 2026 flump /flʌmp/ verb Categories: ActionsObscure Words verb ! Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about flump at Wordnik → Where our words come from → Fall heavily. Set (something or oneself) down with or as if with a noise. He planked the money on the table Origin Onomatopoeic. Compare plunk. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: plunkplonkplopplumpplankflopfluffschlump Back to today's word