How do you spell have fun in french?

"Have fun" in French is "amuse-toi" (informal, singular) or "amusez-vous" (formal or plural).

Here's a breakdown:

* "Amuse-toi" is the informal, singular form. You would use this with someone you know well, like a friend or family member.

* "Amusez-vous" is the formal or plural form. You would use this with someone you don't know well, or with a group of people.

Let me know if you have any other French phrases you'd like translated!