Home › Words › U › unvoluntarinessunvoluntarinessunvoluntariness means synonym of involuntariness.Among words judged in Lexicurio's Arena, unvoluntariness ranks #36,618 of 42,749 for Qualifying.EtymologyFrom unvoluntary + -ness.nounSynonym of involuntariness.Definitions & examples from Wiktionary (CC BY-SA 3.0).