Home › Words › S › stepmammastepmammastepmamma · noun — stepmother.Definition from Wiktionary (CC BY-SA 3.0).Among words judged in Lexicurio's Arena, stepmamma ranks #28,444 of 43,022 for Qualifying.EtymologyFrom step- + mamma.nounstepmotherDefinitions & examples from Wiktionary (CC BY-SA 3.0).