Home › Words › O › oftennessoftennessoftenness means the quality of happening often; frequency.Among words judged in Lexicurio's Arena, oftenness ranks #27,022 of 42,749 for Qualifying.EtymologyFrom often + -ness. Compare Middle English oftnes (“frequency”).nounThe quality of happening often; frequency.Definitions & examples from Wiktionary (CC BY-SA 3.0).