How do you say rei I want to have in french?

You can't directly translate "rei" into French, as it's not a French word.

To express "I want to have" in French, you would use:

* "Je veux avoir" (formal)

* "J'ai envie d'avoir" (informal, more like "I feel like having")

Here are some examples:

* "Je veux avoir un chat." (I want to have a cat.)

* "J'ai envie d'avoir une pizza." (I feel like having a pizza.)

To provide a more accurate translation, you would need to provide context for what "rei" refers to.