ex name taboo
Derived from the cultural anthropology term "death name taboo," an ex name taboo is the reluctance of friends and family to mention the name of an ex, typically replacing the ex's name with emphasized pronouns.
Nydia: "David, I still have HER pan..."
David: "Dude, relax, you can say 'Liz's pan.' There's not an ex name taboo on our breakup."
David: "Dude, relax, you can say 'Liz's pan.' There's not an ex name taboo on our breakup."