Home › Words › U › undefendednessundefendednessundefendedness means the state or condition of being undefended.Among words judged in Lexicurio's Arena, undefendedness ranks #35,660 of 42,747 for Qualifying.EtymologyFrom undefended + -ness.nounThe state or condition of being undefended.Definitions & examples from Wiktionary (CC BY-SA 3.0).