Home › Words › U › unsubstantializeunsubstantializeunsubstantialize means to make unsubstantial.Among words judged in Lexicurio's Arena, unsubstantialize ranks #16,765 of 42,785 for Qualifying.EtymologyFrom unsubstantial + -ize.verbTo make unsubstantial.Definitions & examples from Wiktionary (CC BY-SA 3.0).