Formal:
* Bonne matinée: This is the most common and polite way to say "enjoy your morning." It literally translates to "good morning."
* Passez une bonne matinée: This translates to "have a good morning" and is a bit more formal than "bonne matinée."
Informal:
* Profite bien de ta matinée: This translates to "enjoy your morning well" and is a more informal and friendly way to say it.
* Bonne journée: While technically meaning "have a good day," it's commonly used to mean "enjoy your morning" in informal contexts.
For a specific person:
* Bonne matinée, [name]: This is a polite way to say "enjoy your morning" to someone you know.
Note: You can also use the phrase "Profite bien de la journée" ("Enjoy your day well") for the whole day, even if it's only morning.
Choose the phrase that best suits the situation and the person you're talking to.