How do you say sonnier in french?

"Sonnier" is already a French word. It's a surname, and it's spelled the same way in French as it is in English.

You might be thinking of a specific word related to "sonnier" but you need to provide more context.

For example:

* Are you asking about a specific meaning of "sonnier"? Like, "What does 'sonnier' mean in French?"

* Are you asking for a French synonym of "sonnier"? For example, if "sonnier" refers to a type of bell, you might be looking for "cloche".

Please provide more information so I can help you better!