Added 10 October 2026 muckiness noun Categories: Obscure Words noun ! Definition from Wiktionary (CC BY-SA). More about muckiness at Wordnik → Where our words come from → The quality of being mucky; dirtiness. muck; dirt Origin From mucky + -ness. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: muddlinessmussinessmuddinesssmuttinesssmudginessdirtinessmurkinessmankinesssoilinessmurknessnastinessdreckiness Back to today's word