Home › Words › U › underivabilityunderivabilityunderivability means the state or condition of being underivable; inderivability.Among words judged in Lexicurio's Arena, underivability ranks #42,506 of 42,747 for Qualifying.EtymologyFrom underivabl(e) + -ity.nounThe state or condition of being underivable; inderivability.Definitions & examples from Wiktionary (CC BY-SA 3.0).