Home › Words › S › sludginesssludginesssludginess means the state or condition of being sludgy.Among words judged in Lexicurio's Arena, sludginess ranks #34,845 of 42,747 for Qualifying.EtymologyFrom sludgy + -ness.nounThe state or condition of being sludgy.Definitions & examples from Wiktionary (CC BY-SA 3.0).