How do you say 9 months in french?

There are a few ways to say "9 months" in French, depending on the context:

* Neuf mois: This is the most literal and common way to say "9 months."

* Un trimestre: This means "a trimester" and refers to a period of 3 months, so you could say "trois trimestres" to mean "9 months."

* Deux trimestres et demi: This literally means "two and a half trimesters" and is less common, but still understandable.

The best way to say it depends on the situation. If you're talking about a pregnancy, for example, you would likely say "neuf mois." If you're talking about a longer period of time, like a work contract, you might say "trois trimestres."