Home › Words › U › unrobustnessunrobustnessunrobustness · noun — the state or condition of being unrobust; frailness.Definition from Wiktionary (CC BY-SA 3.0).Among words judged in Lexicurio's Arena, unrobustness ranks #36,570 of 43,010 for Qualifying.EtymologyFrom unrobust + -ness.nounThe state or condition of being unrobust; frailness.Definitions & examples from Wiktionary (CC BY-SA 3.0).