Added 10 October 2026 clumping /ˈklʌmpɪŋ/ noun Categories: ActionsRare Words noun ! Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about clumping at Wordnik → Where our words come from → The sound of a horse's hoofs hitting on a hard surface. Related Words: lumpclodglobplunkclompthudthumpclunkballbundleclop Back to today's word