Home › Words › R › riverworthinessriverworthinessriverworthiness means the quality of being riverworthy.Among words judged in Lexicurio's Arena, riverworthiness ranks #41,232 of 42,762 for Qualifying.EtymologyFrom riverworthy + -ness.nounThe quality of being riverworthy.Definitions & examples from Wiktionary (CC BY-SA 3.0).