Home › Words › T › tongannesstongannesstonganness means the quality of being Tongan.Among words judged in Lexicurio's Arena, tonganness ranks #16,007 of 42,747 for Qualifying.EtymologyFrom Tongan + -ness.nounThe quality of being Tongan.Definitions & examples from Wiktionary (CC BY-SA 3.0).