How do you spell great auntie in french?

There isn't a single word equivalent to "great auntie" in French. Here's how you'd express it:

* "Grande tante" - This is the most common and direct translation. "Grande" means "great" and "tante" means "aunt."

* "Tante arrière" - This is a more literal translation, meaning "back aunt."

* "Tante de la génération précédente" - This is a longer phrase that means "aunt of the previous generation."

You can use any of these options, depending on the context and level of formality.