fabulosity

noun

fab·u·los·i·ty | \ ˌfa-byə-ˈlä-sə-tē

Definition of fabulosity

informal + often humorous

: fabulous quality, state, or nature : fabulousness In her pursuit of her true purpose, Alice encounters a variety of splendiferous creatures who encourage her to get in touch with her inner fabulosity. — The Daily Home (Talladega, Alabama) I appreciate Erika's dedication to the character of Erika Jayne. She started out being on the show with a certain level of fashion fabulosity and now she's stuck delivering it year after year.— Brian Moylan

History and Etymology for fabulosity

borrowed from French & Latin; French fabulosité, going back to Middle French, borrowed from Latin fābulōsitāt-, fābulōsitās, from fābulōsus "celebrated in legend, resembling an invented story, mythical" — more at fabulous

Note: Late 20th- and 21st-century use may represent a direct derivation from fabulous, after curious : curiosity, generous : generosity, and like pairs.