jack and jill have been married for ten years, but jill is about to celebrate her three-year adultiversary with her [sancho] matt
the annual recognition of the date that two people, at least one of whom is married, began their extramarital tryst
"jack and jill have been married for ten years, but jill is about to celebrate her three-year adultiversary with her [sancho] matt" What is the definition of "adultiversary"?