Home › Words › U › unactivityunactivityunactivity means the state or condition of being unactive; inactivity.Among words judged in Lexicurio's Arena, unactivity ranks #36,606 of 42,747 for Qualifying.EtymologyFrom unactiv(e) + -ity.nounThe state or condition of being unactive; inactivity.Definitions & examples from Wiktionary (CC BY-SA 3.0).