How do you say great auntie in french?

There isn't a direct translation for "great auntie" in French. You need to use a combination of words to convey the meaning. Here are a few options, depending on the specific relationship:

* If it's your mother's or father's aunt:

* La tante de ma mère/de mon père (The aunt of my mother/father)

* La grande tante (The great aunt)

* La grand-tante (The great aunt)

* If it's your grandparent's sister:

* La sœur de ma grand-mère/de mon grand-père (The sister of my grandmother/grandfather)

* La tante de mes parents (The aunt of my parents)

* La grande tante (The great aunt)

* La grand-tante (The great aunt)

* If it's your great-grandparent's sister:

* La sœur de mon arrière-grand-mère/de mon arrière-grand-père (The sister of my great-grandmother/great-grandfather)

* La tante de mes grands-parents (The aunt of my grandparents)

* La grande tante (The great aunt)

* La grand-tante (The great aunt)

It's best to use the most specific option that applies to the situation.